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5 Benefits of Learning Through the Case Study Method

• 28 Nov 2023

While several factors make HBS Online unique —including a global Community and real-world outcomes —active learning through the case study method rises to the top.

In a 2023 City Square Associates survey, 74 percent of HBS Online learners who also took a course from another provider said HBS Online’s case method and real-world examples were better by comparison.

Here’s a primer on the case method, five benefits you could gain, and how to experience it for yourself.

Access your free e-book today.

What Is the Harvard Business School Case Study Method?

The case study method , or case method , is a learning technique in which you’re presented with a real-world business challenge and asked how you’d solve it. After working through it yourself and with peers, you’re told how the scenario played out.

HBS pioneered the case method in 1922. Shortly before, in 1921, the first case was written.

“How do you go into an ambiguous situation and get to the bottom of it?” says HBS Professor Jan Rivkin, former senior associate dean and chair of HBS's master of business administration (MBA) program, in a video about the case method . “That skill—the skill of figuring out a course of inquiry to choose a course of action—that skill is as relevant today as it was in 1921.”

Originally developed for the in-person MBA classroom, HBS Online adapted the case method into an engaging, interactive online learning experience in 2014.

In HBS Online courses , you learn about each case from the business professional who experienced it. After reviewing their videos, you’re prompted to take their perspective and explain how you’d handle their situation.

You then get to read peers’ responses, “star” them, and comment to further the discussion. Afterward, you learn how the professional handled it and their key takeaways.

Learn more about HBS Online's approach to the case method in the video below, and subscribe to our YouTube channel for more.

HBS Online’s adaptation of the case method incorporates the famed HBS “cold call,” in which you’re called on at random to make a decision without time to prepare.

“Learning came to life!” said Sheneka Balogun , chief administration officer and chief of staff at LeMoyne-Owen College, of her experience taking the Credential of Readiness (CORe) program . “The videos from the professors, the interactive cold calls where you were randomly selected to participate, and the case studies that enhanced and often captured the essence of objectives and learning goals were all embedded in each module. This made learning fun, engaging, and student-friendly.”

If you’re considering taking a course that leverages the case study method, here are five benefits you could experience.

5 Benefits of Learning Through Case Studies

1. take new perspectives.

The case method prompts you to consider a scenario from another person’s perspective. To work through the situation and come up with a solution, you must consider their circumstances, limitations, risk tolerance, stakeholders, resources, and potential consequences to assess how to respond.

Taking on new perspectives not only can help you navigate your own challenges but also others’. Putting yourself in someone else’s situation to understand their motivations and needs can go a long way when collaborating with stakeholders.

2. Hone Your Decision-Making Skills

Another skill you can build is the ability to make decisions effectively . The case study method forces you to use limited information to decide how to handle a problem—just like in the real world.

Throughout your career, you’ll need to make difficult decisions with incomplete or imperfect information—and sometimes, you won’t feel qualified to do so. Learning through the case method allows you to practice this skill in a low-stakes environment. When facing a real challenge, you’ll be better prepared to think quickly, collaborate with others, and present and defend your solution.

3. Become More Open-Minded

As you collaborate with peers on responses, it becomes clear that not everyone solves problems the same way. Exposing yourself to various approaches and perspectives can help you become a more open-minded professional.

When you’re part of a diverse group of learners from around the world, your experiences, cultures, and backgrounds contribute to a range of opinions on each case.

On the HBS Online course platform, you’re prompted to view and comment on others’ responses, and discussion is encouraged. This practice of considering others’ perspectives can make you more receptive in your career.

“You’d be surprised at how much you can learn from your peers,” said Ratnaditya Jonnalagadda , a software engineer who took CORe.

In addition to interacting with peers in the course platform, Jonnalagadda was part of the HBS Online Community , where he networked with other professionals and continued discussions sparked by course content.

“You get to understand your peers better, and students share examples of businesses implementing a concept from a module you just learned,” Jonnalagadda said. “It’s a very good way to cement the concepts in one's mind.”

4. Enhance Your Curiosity

One byproduct of taking on different perspectives is that it enables you to picture yourself in various roles, industries, and business functions.

“Each case offers an opportunity for students to see what resonates with them, what excites them, what bores them, which role they could imagine inhabiting in their careers,” says former HBS Dean Nitin Nohria in the Harvard Business Review . “Cases stimulate curiosity about the range of opportunities in the world and the many ways that students can make a difference as leaders.”

Through the case method, you can “try on” roles you may not have considered and feel more prepared to change or advance your career .

5. Build Your Self-Confidence

Finally, learning through the case study method can build your confidence. Each time you assume a business leader’s perspective, aim to solve a new challenge, and express and defend your opinions and decisions to peers, you prepare to do the same in your career.

According to a 2022 City Square Associates survey , 84 percent of HBS Online learners report feeling more confident making business decisions after taking a course.

“Self-confidence is difficult to teach or coach, but the case study method seems to instill it in people,” Nohria says in the Harvard Business Review . “There may well be other ways of learning these meta-skills, such as the repeated experience gained through practice or guidance from a gifted coach. However, under the direction of a masterful teacher, the case method can engage students and help them develop powerful meta-skills like no other form of teaching.”

How to Experience the Case Study Method

If the case method seems like a good fit for your learning style, experience it for yourself by taking an HBS Online course. Offerings span eight subject areas, including:

• Business essentials
• Leadership and management
• Entrepreneurship and innovation
• Digital transformation
• Finance and accounting
• Business in society

No matter which course or credential program you choose, you’ll examine case studies from real business professionals, work through their challenges alongside peers, and gain valuable insights to apply to your career.

Are you interested in discovering how HBS Online can help advance your career? Explore our course catalog and download our free guide —complete with interactive workbook sections—to determine if online learning is right for you and which course to take.

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What the Case Study Method Really Teaches

• Nitin Nohria

Seven meta-skills that stick even if the cases fade from memory.

It’s been 100 years since Harvard Business School began using the case study method. Beyond teaching specific subject matter, the case study method excels in instilling meta-skills in students. This article explains the importance of seven such skills: preparation, discernment, bias recognition, judgement, collaboration, curiosity, and self-confidence.

During my decade as dean of Harvard Business School, I spent hundreds of hours talking with our alumni. To enliven these conversations, I relied on a favorite question: “What was the most important thing you learned from your time in our MBA program?”

• Nitin Nohria is the George F. Baker Jr. and Distinguished Service University Professor. He served as the 10th dean of Harvard Business School, from 2010 to 2020.

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Methodology

• What Is a Case Study? | Definition, Examples & Methods

What Is a Case Study? | Definition, Examples & Methods

Published on May 8, 2019 by Shona McCombes . Revised on November 20, 2023.

A case study is a detailed study of a specific subject, such as a person, group, place, event, organization, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research.

A case study research design usually involves qualitative methods , but quantitative methods are sometimes also used. Case studies are good for describing , comparing, evaluating and understanding different aspects of a research problem .

Table of contents

When to do a case study, step 1: select a case, step 2: build a theoretical framework, step 3: collect your data, step 4: describe and analyze the case, other interesting articles.

A case study is an appropriate research design when you want to gain concrete, contextual, in-depth knowledge about a specific real-world subject. It allows you to explore the key characteristics, meanings, and implications of the case.

Case studies are often a good choice in a thesis or dissertation . They keep your project focused and manageable when you don’t have the time or resources to do large-scale research.

You might use just one complex case study where you explore a single subject in depth, or conduct multiple case studies to compare and illuminate different aspects of your research problem.

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Once you have developed your problem statement and research questions , you should be ready to choose the specific case that you want to focus on. A good case study should have the potential to:

• Provide new or unexpected insights into the subject
• Challenge or complicate existing assumptions and theories
• Propose practical courses of action to resolve a problem
• Open up new directions for future research

TipIf your research is more practical in nature and aims to simultaneously investigate an issue as you solve it, consider conducting action research instead.

Unlike quantitative or experimental research , a strong case study does not require a random or representative sample. In fact, case studies often deliberately focus on unusual, neglected, or outlying cases which may shed new light on the research problem.

Example of an outlying case studyIn the 1960s the town of Roseto, Pennsylvania was discovered to have extremely low rates of heart disease compared to the US average. It became an important case study for understanding previously neglected causes of heart disease.

However, you can also choose a more common or representative case to exemplify a particular category, experience or phenomenon.

Example of a representative case studyIn the 1920s, two sociologists used Muncie, Indiana as a case study of a typical American city that supposedly exemplified the changing culture of the US at the time.

While case studies focus more on concrete details than general theories, they should usually have some connection with theory in the field. This way the case study is not just an isolated description, but is integrated into existing knowledge about the topic. It might aim to:

• Exemplify a theory by showing how it explains the case under investigation
• Expand on a theory by uncovering new concepts and ideas that need to be incorporated
• Challenge a theory by exploring an outlier case that doesn’t fit with established assumptions

To ensure that your analysis of the case has a solid academic grounding, you should conduct a literature review of sources related to the topic and develop a theoretical framework . This means identifying key concepts and theories to guide your analysis and interpretation.

There are many different research methods you can use to collect data on your subject. Case studies tend to focus on qualitative data using methods such as interviews , observations , and analysis of primary and secondary sources (e.g., newspaper articles, photographs, official records). Sometimes a case study will also collect quantitative data.

Example of a mixed methods case studyFor a case study of a wind farm development in a rural area, you could collect quantitative data on employment rates and business revenue, collect qualitative data on local people’s perceptions and experiences, and analyze local and national media coverage of the development.

The aim is to gain as thorough an understanding as possible of the case and its context.

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In writing up the case study, you need to bring together all the relevant aspects to give as complete a picture as possible of the subject.

How you report your findings depends on the type of research you are doing. Some case studies are structured like a standard scientific paper or thesis , with separate sections or chapters for the methods , results and discussion .

Others are written in a more narrative style, aiming to explore the case from various angles and analyze its meanings and implications (for example, by using textual analysis or discourse analysis ).

In all cases, though, make sure to give contextual details about the case, connect it back to the literature and theory, and discuss how it fits into wider patterns or debates.

If you want to know more about statistics , methodology , or research bias , make sure to check out some of our other articles with explanations and examples.

• Normal distribution
• Degrees of freedom
• Null hypothesis
• Discourse analysis
• Control groups
• Mixed methods research
• Non-probability sampling
• Quantitative research
• Ecological validity

Research bias

• Rosenthal effect
• Implicit bias
• Cognitive bias
• Selection bias
• Negativity bias
• Status quo bias

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Case Study Research Method in Psychology

Saul McLeod, PhD

Editor-in-Chief for Simply Psychology

BSc (Hons) Psychology, MRes, PhD, University of Manchester

Saul McLeod, PhD., is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.

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Associate Editor for Simply Psychology

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Olivia Guy-Evans is a writer and associate editor for Simply Psychology. She has previously worked in healthcare and educational sectors.

On This Page:

Case studies are in-depth investigations of a person, group, event, or community. Typically, data is gathered from various sources using several methods (e.g., observations & interviews).

The case study research method originated in clinical medicine (the case history, i.e., the patient’s personal history). In psychology, case studies are often confined to the study of a particular individual.

The information is mainly biographical and relates to events in the individual’s past (i.e., retrospective), as well as to significant events that are currently occurring in his or her everyday life.

The case study is not a research method, but researchers select methods of data collection and analysis that will generate material suitable for case studies.

Freud (1909a, 1909b) conducted very detailed investigations into the private lives of his patients in an attempt to both understand and help them overcome their illnesses.

This makes it clear that the case study is a method that should only be used by a psychologist, therapist, or psychiatrist, i.e., someone with a professional qualification.

There is an ethical issue of competence. Only someone qualified to diagnose and treat a person can conduct a formal case study relating to atypical (i.e., abnormal) behavior or atypical development.

 Famous Case Studies

• Anna O – One of the most famous case studies, documenting psychoanalyst Josef Breuer’s treatment of “Anna O” (real name Bertha Pappenheim) for hysteria in the late 1800s using early psychoanalytic theory.
• Little Hans – A child psychoanalysis case study published by Sigmund Freud in 1909 analyzing his five-year-old patient Herbert Graf’s house phobia as related to the Oedipus complex.
• Bruce/Brenda – Gender identity case of the boy (Bruce) whose botched circumcision led psychologist John Money to advise gender reassignment and raise him as a girl (Brenda) in the 1960s.
• Genie Wiley – Linguistics/psychological development case of the victim of extreme isolation abuse who was studied in 1970s California for effects of early language deprivation on acquiring speech later in life.
• Phineas Gage – One of the most famous neuropsychology case studies analyzes personality changes in railroad worker Phineas Gage after an 1848 brain injury involving a tamping iron piercing his skull.

Clinical Case Studies

• Studying the effectiveness of psychotherapy approaches with an individual patient
• Assessing and treating mental illnesses like depression, anxiety disorders, PTSD
• Neuropsychological cases investigating brain injuries or disorders

Child Psychology Case Studies

• Studying psychological development from birth through adolescence
• Cases of learning disabilities, autism spectrum disorders, ADHD
• Effects of trauma, abuse, deprivation on development

Types of Case Studies

• Explanatory case studies : Used to explore causation in order to find underlying principles. Helpful for doing qualitative analysis to explain presumed causal links.
• Exploratory case studies : Used to explore situations where an intervention being evaluated has no clear set of outcomes. It helps define questions and hypotheses for future research.
• Descriptive case studies : Describe an intervention or phenomenon and the real-life context in which it occurred. It is helpful for illustrating certain topics within an evaluation.
• Multiple-case studies : Used to explore differences between cases and replicate findings across cases. Helpful for comparing and contrasting specific cases.
• Intrinsic : Used to gain a better understanding of a particular case. Helpful for capturing the complexity of a single case.
• Collective : Used to explore a general phenomenon using multiple case studies. Helpful for jointly studying a group of cases in order to inquire into the phenomenon.

Where Do You Find Data for a Case Study?

There are several places to find data for a case study. The key is to gather data from multiple sources to get a complete picture of the case and corroborate facts or findings through triangulation of evidence. Most of this information is likely qualitative (i.e., verbal description rather than measurement), but the psychologist might also collect numerical data.

1. Primary sources

• Interviews – Interviewing key people related to the case to get their perspectives and insights. The interview is an extremely effective procedure for obtaining information about an individual, and it may be used to collect comments from the person’s friends, parents, employer, workmates, and others who have a good knowledge of the person, as well as to obtain facts from the person him or herself.
• Observations – Observing behaviors, interactions, processes, etc., related to the case as they unfold in real-time.
• Documents & Records – Reviewing private documents, diaries, public records, correspondence, meeting minutes, etc., relevant to the case.

2. Secondary sources

• News/Media – News coverage of events related to the case study.
• Academic articles – Journal articles, dissertations etc. that discuss the case.
• Government reports – Official data and records related to the case context.
• Books/films – Books, documentaries or films discussing the case.

3. Archival records

Searching historical archives, museum collections and databases to find relevant documents, visual/audio records related to the case history and context.

Public archives like newspapers, organizational records, photographic collections could all include potentially relevant pieces of information to shed light on attitudes, cultural perspectives, common practices and historical contexts related to psychology.

4. Organizational records

Organizational records offer the advantage of often having large datasets collected over time that can reveal or confirm psychological insights.

Of course, privacy and ethical concerns regarding confidential data must be navigated carefully.

However, with proper protocols, organizational records can provide invaluable context and empirical depth to qualitative case studies exploring the intersection of psychology and organizations.

• Organizational/industrial psychology research : Organizational records like employee surveys, turnover/retention data, policies, incident reports etc. may provide insight into topics like job satisfaction, workplace culture and dynamics, leadership issues, employee behaviors etc.
• Clinical psychology : Therapists/hospitals may grant access to anonymized medical records to study aspects like assessments, diagnoses, treatment plans etc. This could shed light on clinical practices.
• School psychology : Studies could utilize anonymized student records like test scores, grades, disciplinary issues, and counseling referrals to study child development, learning barriers, effectiveness of support programs, and more.

How do I Write a Case Study in Psychology?

Follow specified case study guidelines provided by a journal or your psychology tutor. General components of clinical case studies include: background, symptoms, assessments, diagnosis, treatment, and outcomes. Interpreting the information means the researcher decides what to include or leave out. A good case study should always clarify which information is the factual description and which is an inference or the researcher’s opinion.

1. Introduction

• Provide background on the case context and why it is of interest, presenting background information like demographics, relevant history, and presenting problem.
• Compare briefly to similar published cases if applicable. Clearly state the focus/importance of the case.

2. Case Presentation

• Describe the presenting problem in detail, including symptoms, duration,and impact on daily life.
• Include client demographics like age and gender, information about social relationships, and mental health history.
• Describe all physical, emotional, and/or sensory symptoms reported by the client.
• Use patient quotes to describe the initial complaint verbatim. Follow with full-sentence summaries of relevant history details gathered, including key components that led to a working diagnosis.
• Summarize clinical exam results, namely orthopedic/neurological tests, imaging, lab tests, etc. Note actual results rather than subjective conclusions. Provide images if clearly reproducible/anonymized.
• Clearly state the working diagnosis or clinical impression before transitioning to management.

3. Management and Outcome

• Indicate the total duration of care and number of treatments given over what timeframe. Use specific names/descriptions for any therapies/interventions applied.
• Present the results of the intervention,including any quantitative or qualitative data collected.
• For outcomes, utilize visual analog scales for pain, medication usage logs, etc., if possible. Include patient self-reports of improvement/worsening of symptoms. Note the reason for discharge/end of care.

4. Discussion

• Analyze the case, exploring contributing factors, limitations of the study, and connections to existing research.
• Analyze the effectiveness of the intervention,considering factors like participant adherence, limitations of the study, and potential alternative explanations for the results.
• Identify any questions raised in the case analysis and relate insights to established theories and current research if applicable. Avoid definitive claims about physiological explanations.
• Offer clinical implications, and suggest future research directions.

5. Additional Items

• Thank specific assistants for writing support only. No patient acknowledgments.
• References should directly support any key claims or quotes included.
• Use tables/figures/images only if substantially informative. Include permissions and legends/explanatory notes.
• Provides detailed (rich qualitative) information.
• Provides insight for further research.
• Permitting investigation of otherwise impractical (or unethical) situations.

Case studies allow a researcher to investigate a topic in far more detail than might be possible if they were trying to deal with a large number of research participants (nomothetic approach) with the aim of ‘averaging’.

Because of their in-depth, multi-sided approach, case studies often shed light on aspects of human thinking and behavior that would be unethical or impractical to study in other ways.

Research that only looks into the measurable aspects of human behavior is not likely to give us insights into the subjective dimension of experience, which is important to psychoanalytic and humanistic psychologists.

Case studies are often used in exploratory research. They can help us generate new ideas (that might be tested by other methods). They are an important way of illustrating theories and can help show how different aspects of a person’s life are related to each other.

The method is, therefore, important for psychologists who adopt a holistic point of view (i.e., humanistic psychologists ).

Limitations

• Lacking scientific rigor and providing little basis for generalization of results to the wider population.
• Researchers’ own subjective feelings may influence the case study (researcher bias).
• Difficult to replicate.
• Time-consuming and expensive.
• The volume of data, together with the time restrictions in place, impacted the depth of analysis that was possible within the available resources.

Because a case study deals with only one person/event/group, we can never be sure if the case study investigated is representative of the wider body of “similar” instances. This means the conclusions drawn from a particular case may not be transferable to other settings.

Because case studies are based on the analysis of qualitative (i.e., descriptive) data , a lot depends on the psychologist’s interpretation of the information she has acquired.

This means that there is a lot of scope for Anna O , and it could be that the subjective opinions of the psychologist intrude in the assessment of what the data means.

For example, Freud has been criticized for producing case studies in which the information was sometimes distorted to fit particular behavioral theories (e.g., Little Hans ).

This is also true of Money’s interpretation of the Bruce/Brenda case study (Diamond, 1997) when he ignored evidence that went against his theory.

Breuer, J., & Freud, S. (1895).  Studies on hysteria . Standard Edition 2: London.

Curtiss, S. (1981). Genie: The case of a modern wild child .

Diamond, M., & Sigmundson, K. (1997). Sex Reassignment at Birth: Long-term Review and Clinical Implications. Archives of Pediatrics & Adolescent Medicine , 151(3), 298-304

Freud, S. (1909a). Analysis of a phobia of a five year old boy. In The Pelican Freud Library (1977), Vol 8, Case Histories 1, pages 169-306

Freud, S. (1909b). Bemerkungen über einen Fall von Zwangsneurose (Der “Rattenmann”). Jb. psychoanal. psychopathol. Forsch ., I, p. 357-421; GW, VII, p. 379-463; Notes upon a case of obsessional neurosis, SE , 10: 151-318.

Harlow J. M. (1848). Passage of an iron rod through the head.  Boston Medical and Surgical Journal, 39 , 389–393.

Harlow, J. M. (1868).  Recovery from the Passage of an Iron Bar through the Head .  Publications of the Massachusetts Medical Society. 2  (3), 327-347.

Money, J., & Ehrhardt, A. A. (1972).  Man & Woman, Boy & Girl : The Differentiation and Dimorphism of Gender Identity from Conception to Maturity. Baltimore, Maryland: Johns Hopkins University Press.

Money, J., & Tucker, P. (1975). Sexual signatures: On being a man or a woman.

Further Information

• Case Study Approach
• Case Study Method
• Enhancing the Quality of Case Studies in Health Services Research
• “We do things together” A case study of “couplehood” in dementia
• Using mixed methods for evaluating an integrative approach to cancer care: a case study

The Ultimate Guide to Qualitative Research - Part 1: The Basics

• Introduction and overview
• What is qualitative research?
• What is qualitative data?
• Examples of qualitative data
• Qualitative vs. quantitative research
• Mixed methods
• Qualitative research preparation
• Theoretical perspective
• Theoretical framework
• Literature reviews

Research question

• Conceptual framework
• Conceptual vs. theoretical framework

Data collection

• Qualitative research methods
• Focus groups
• Observational research

What is a case study?

Applications for case study research, what is a good case study, process of case study design, benefits and limitations of case studies.

• Ethnographical research
• Ethical considerations
• Confidentiality and privacy
• Power dynamics
• Reflexivity

Case studies

Case studies are essential to qualitative research , offering a lens through which researchers can investigate complex phenomena within their real-life contexts. This chapter explores the concept, purpose, applications, examples, and types of case studies and provides guidance on how to conduct case study research effectively.

Whereas quantitative methods look at phenomena at scale, case study research looks at a concept or phenomenon in considerable detail. While analyzing a single case can help understand one perspective regarding the object of research inquiry, analyzing multiple cases can help obtain a more holistic sense of the topic or issue. Let's provide a basic definition of a case study, then explore its characteristics and role in the qualitative research process.

Definition of a case study

A case study in qualitative research is a strategy of inquiry that involves an in-depth investigation of a phenomenon within its real-world context. It provides researchers with the opportunity to acquire an in-depth understanding of intricate details that might not be as apparent or accessible through other methods of research. The specific case or cases being studied can be a single person, group, or organization – demarcating what constitutes a relevant case worth studying depends on the researcher and their research question .

Among qualitative research methods , a case study relies on multiple sources of evidence, such as documents, artifacts, interviews , or observations , to present a complete and nuanced understanding of the phenomenon under investigation. The objective is to illuminate the readers' understanding of the phenomenon beyond its abstract statistical or theoretical explanations.

Characteristics of case studies

Case studies typically possess a number of distinct characteristics that set them apart from other research methods. These characteristics include a focus on holistic description and explanation, flexibility in the design and data collection methods, reliance on multiple sources of evidence, and emphasis on the context in which the phenomenon occurs.

Furthermore, case studies can often involve a longitudinal examination of the case, meaning they study the case over a period of time. These characteristics allow case studies to yield comprehensive, in-depth, and richly contextualized insights about the phenomenon of interest.

The role of case studies in research

Case studies hold a unique position in the broader landscape of research methods aimed at theory development. They are instrumental when the primary research interest is to gain an intensive, detailed understanding of a phenomenon in its real-life context.

In addition, case studies can serve different purposes within research - they can be used for exploratory, descriptive, or explanatory purposes, depending on the research question and objectives. This flexibility and depth make case studies a valuable tool in the toolkit of qualitative researchers.

Remember, a well-conducted case study can offer a rich, insightful contribution to both academic and practical knowledge through theory development or theory verification, thus enhancing our understanding of complex phenomena in their real-world contexts.

What is the purpose of a case study?

Case study research aims for a more comprehensive understanding of phenomena, requiring various research methods to gather information for qualitative analysis . Ultimately, a case study can allow the researcher to gain insight into a particular object of inquiry and develop a theoretical framework relevant to the research inquiry.

Why use case studies in qualitative research?

Using case studies as a research strategy depends mainly on the nature of the research question and the researcher's access to the data.

Conducting case study research provides a level of detail and contextual richness that other research methods might not offer. They are beneficial when there's a need to understand complex social phenomena within their natural contexts.

The explanatory, exploratory, and descriptive roles of case studies

Case studies can take on various roles depending on the research objectives. They can be exploratory when the research aims to discover new phenomena or define new research questions; they are descriptive when the objective is to depict a phenomenon within its context in a detailed manner; and they can be explanatory if the goal is to understand specific relationships within the studied context. Thus, the versatility of case studies allows researchers to approach their topic from different angles, offering multiple ways to uncover and interpret the data .

The impact of case studies on knowledge development

Case studies play a significant role in knowledge development across various disciplines. Analysis of cases provides an avenue for researchers to explore phenomena within their context based on the collected data.

This can result in the production of rich, practical insights that can be instrumental in both theory-building and practice. Case studies allow researchers to delve into the intricacies and complexities of real-life situations, uncovering insights that might otherwise remain hidden.

Types of case studies

In qualitative research , a case study is not a one-size-fits-all approach. Depending on the nature of the research question and the specific objectives of the study, researchers might choose to use different types of case studies. These types differ in their focus, methodology, and the level of detail they provide about the phenomenon under investigation.

Understanding these types is crucial for selecting the most appropriate approach for your research project and effectively achieving your research goals. Let's briefly look at the main types of case studies.

Exploratory case studies

Exploratory case studies are typically conducted to develop a theory or framework around an understudied phenomenon. They can also serve as a precursor to a larger-scale research project. Exploratory case studies are useful when a researcher wants to identify the key issues or questions which can spur more extensive study or be used to develop propositions for further research. These case studies are characterized by flexibility, allowing researchers to explore various aspects of a phenomenon as they emerge, which can also form the foundation for subsequent studies.

Descriptive case studies

Descriptive case studies aim to provide a complete and accurate representation of a phenomenon or event within its context. These case studies are often based on an established theoretical framework, which guides how data is collected and analyzed. The researcher is concerned with describing the phenomenon in detail, as it occurs naturally, without trying to influence or manipulate it.

Explanatory case studies

Explanatory case studies are focused on explanation - they seek to clarify how or why certain phenomena occur. Often used in complex, real-life situations, they can be particularly valuable in clarifying causal relationships among concepts and understanding the interplay between different factors within a specific context.

Intrinsic, instrumental, and collective case studies

These three categories of case studies focus on the nature and purpose of the study. An intrinsic case study is conducted when a researcher has an inherent interest in the case itself. Instrumental case studies are employed when the case is used to provide insight into a particular issue or phenomenon. A collective case study, on the other hand, involves studying multiple cases simultaneously to investigate some general phenomena.

Each type of case study serves a different purpose and has its own strengths and challenges. The selection of the type should be guided by the research question and objectives, as well as the context and constraints of the research.

The flexibility, depth, and contextual richness offered by case studies make this approach an excellent research method for various fields of study. They enable researchers to investigate real-world phenomena within their specific contexts, capturing nuances that other research methods might miss. Across numerous fields, case studies provide valuable insights into complex issues.

Critical information systems research

Case studies provide a detailed understanding of the role and impact of information systems in different contexts. They offer a platform to explore how information systems are designed, implemented, and used and how they interact with various social, economic, and political factors. Case studies in this field often focus on examining the intricate relationship between technology, organizational processes, and user behavior, helping to uncover insights that can inform better system design and implementation.

Health research

Health research is another field where case studies are highly valuable. They offer a way to explore patient experiences, healthcare delivery processes, and the impact of various interventions in a real-world context.

Case studies can provide a deep understanding of a patient's journey, giving insights into the intricacies of disease progression, treatment effects, and the psychosocial aspects of health and illness.

Asthma research studies

Specifically within medical research, studies on asthma often employ case studies to explore the individual and environmental factors that influence asthma development, management, and outcomes. A case study can provide rich, detailed data about individual patients' experiences, from the triggers and symptoms they experience to the effectiveness of various management strategies. This can be crucial for developing patient-centered asthma care approaches.

Other fields

Apart from the fields mentioned, case studies are also extensively used in business and management research, education research, and political sciences, among many others. They provide an opportunity to delve into the intricacies of real-world situations, allowing for a comprehensive understanding of various phenomena.

Case studies, with their depth and contextual focus, offer unique insights across these varied fields. They allow researchers to illuminate the complexities of real-life situations, contributing to both theory and practice.

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Understanding the key elements of case study design is crucial for conducting rigorous and impactful case study research. A well-structured design guides the researcher through the process, ensuring that the study is methodologically sound and its findings are reliable and valid. The main elements of case study design include the research question , propositions, units of analysis, and the logic linking the data to the propositions.

The research question is the foundation of any research study. A good research question guides the direction of the study and informs the selection of the case, the methods of collecting data, and the analysis techniques. A well-formulated research question in case study research is typically clear, focused, and complex enough to merit further detailed examination of the relevant case(s).

Propositions

Propositions, though not necessary in every case study, provide a direction by stating what we might expect to find in the data collected. They guide how data is collected and analyzed by helping researchers focus on specific aspects of the case. They are particularly important in explanatory case studies, which seek to understand the relationships among concepts within the studied phenomenon.

Units of analysis

The unit of analysis refers to the case, or the main entity or entities that are being analyzed in the study. In case study research, the unit of analysis can be an individual, a group, an organization, a decision, an event, or even a time period. It's crucial to clearly define the unit of analysis, as it shapes the qualitative data analysis process by allowing the researcher to analyze a particular case and synthesize analysis across multiple case studies to draw conclusions.

Argumentation

This refers to the inferential model that allows researchers to draw conclusions from the data. The researcher needs to ensure that there is a clear link between the data, the propositions (if any), and the conclusions drawn. This argumentation is what enables the researcher to make valid and credible inferences about the phenomenon under study.

Understanding and carefully considering these elements in the design phase of a case study can significantly enhance the quality of the research. It can help ensure that the study is methodologically sound and its findings contribute meaningful insights about the case.

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Conducting a case study involves several steps, from defining the research question and selecting the case to collecting and analyzing data . This section outlines these key stages, providing a practical guide on how to conduct case study research.

Defining the research question

The first step in case study research is defining a clear, focused research question. This question should guide the entire research process, from case selection to analysis. It's crucial to ensure that the research question is suitable for a case study approach. Typically, such questions are exploratory or descriptive in nature and focus on understanding a phenomenon within its real-life context.

Selecting and defining the case

The selection of the case should be based on the research question and the objectives of the study. It involves choosing a unique example or a set of examples that provide rich, in-depth data about the phenomenon under investigation. After selecting the case, it's crucial to define it clearly, setting the boundaries of the case, including the time period and the specific context.

Previous research can help guide the case study design. When considering a case study, an example of a case could be taken from previous case study research and used to define cases in a new research inquiry. Considering recently published examples can help understand how to select and define cases effectively.

Developing a detailed case study protocol

A case study protocol outlines the procedures and general rules to be followed during the case study. This includes the data collection methods to be used, the sources of data, and the procedures for analysis. Having a detailed case study protocol ensures consistency and reliability in the study.

The protocol should also consider how to work with the people involved in the research context to grant the research team access to collecting data. As mentioned in previous sections of this guide, establishing rapport is an essential component of qualitative research as it shapes the overall potential for collecting and analyzing data.

Collecting data

Gathering data in case study research often involves multiple sources of evidence, including documents, archival records, interviews, observations, and physical artifacts. This allows for a comprehensive understanding of the case. The process for gathering data should be systematic and carefully documented to ensure the reliability and validity of the study.

Analyzing and interpreting data

The next step is analyzing the data. This involves organizing the data , categorizing it into themes or patterns , and interpreting these patterns to answer the research question. The analysis might also involve comparing the findings with prior research or theoretical propositions.

Writing the case study report

The final step is writing the case study report . This should provide a detailed description of the case, the data, the analysis process, and the findings. The report should be clear, organized, and carefully written to ensure that the reader can understand the case and the conclusions drawn from it.

Each of these steps is crucial in ensuring that the case study research is rigorous, reliable, and provides valuable insights about the case.

The type, depth, and quality of data in your study can significantly influence the validity and utility of the study. In case study research, data is usually collected from multiple sources to provide a comprehensive and nuanced understanding of the case. This section will outline the various methods of collecting data used in case study research and discuss considerations for ensuring the quality of the data.

Interviews are a common method of gathering data in case study research. They can provide rich, in-depth data about the perspectives, experiences, and interpretations of the individuals involved in the case. Interviews can be structured , semi-structured , or unstructured , depending on the research question and the degree of flexibility needed.

Observations

Observations involve the researcher observing the case in its natural setting, providing first-hand information about the case and its context. Observations can provide data that might not be revealed in interviews or documents, such as non-verbal cues or contextual information.

Documents and artifacts

Documents and archival records provide a valuable source of data in case study research. They can include reports, letters, memos, meeting minutes, email correspondence, and various public and private documents related to the case.

These records can provide historical context, corroborate evidence from other sources, and offer insights into the case that might not be apparent from interviews or observations.

Physical artifacts refer to any physical evidence related to the case, such as tools, products, or physical environments. These artifacts can provide tangible insights into the case, complementing the data gathered from other sources.

Ensuring the quality of data collection

Determining the quality of data in case study research requires careful planning and execution. It's crucial to ensure that the data is reliable, accurate, and relevant to the research question. This involves selecting appropriate methods of collecting data, properly training interviewers or observers, and systematically recording and storing the data. It also includes considering ethical issues related to collecting and handling data, such as obtaining informed consent and ensuring the privacy and confidentiality of the participants.

Data analysis

Analyzing case study research involves making sense of the rich, detailed data to answer the research question. This process can be challenging due to the volume and complexity of case study data. However, a systematic and rigorous approach to analysis can ensure that the findings are credible and meaningful. This section outlines the main steps and considerations in analyzing data in case study research.

Organizing the data

The first step in the analysis is organizing the data. This involves sorting the data into manageable sections, often according to the data source or the theme. This step can also involve transcribing interviews, digitizing physical artifacts, or organizing observational data.

Categorizing and coding the data

Once the data is organized, the next step is to categorize or code the data. This involves identifying common themes, patterns, or concepts in the data and assigning codes to relevant data segments. Coding can be done manually or with the help of software tools, and in either case, qualitative analysis software can greatly facilitate the entire coding process. Coding helps to reduce the data to a set of themes or categories that can be more easily analyzed.

Identifying patterns and themes

After coding the data, the researcher looks for patterns or themes in the coded data. This involves comparing and contrasting the codes and looking for relationships or patterns among them. The identified patterns and themes should help answer the research question.

Interpreting the data

Once patterns and themes have been identified, the next step is to interpret these findings. This involves explaining what the patterns or themes mean in the context of the research question and the case. This interpretation should be grounded in the data, but it can also involve drawing on theoretical concepts or prior research.

Verification of the data

The last step in the analysis is verification. This involves checking the accuracy and consistency of the analysis process and confirming that the findings are supported by the data. This can involve re-checking the original data, checking the consistency of codes, or seeking feedback from research participants or peers.

Like any research method , case study research has its strengths and limitations. Researchers must be aware of these, as they can influence the design, conduct, and interpretation of the study.

Understanding the strengths and limitations of case study research can also guide researchers in deciding whether this approach is suitable for their research question . This section outlines some of the key strengths and limitations of case study research.

Benefits include the following:

• Rich, detailed data: One of the main strengths of case study research is that it can generate rich, detailed data about the case. This can provide a deep understanding of the case and its context, which can be valuable in exploring complex phenomena.
• Flexibility: Case study research is flexible in terms of design , data collection , and analysis . A sufficient degree of flexibility allows the researcher to adapt the study according to the case and the emerging findings.
• Real-world context: Case study research involves studying the case in its real-world context, which can provide valuable insights into the interplay between the case and its context.
• Multiple sources of evidence: Case study research often involves collecting data from multiple sources , which can enhance the robustness and validity of the findings.

On the other hand, researchers should consider the following limitations:

• Generalizability: A common criticism of case study research is that its findings might not be generalizable to other cases due to the specificity and uniqueness of each case.
• Time and resource intensive: Case study research can be time and resource intensive due to the depth of the investigation and the amount of collected data.
• Complexity of analysis: The rich, detailed data generated in case study research can make analyzing the data challenging.
• Subjectivity: Given the nature of case study research, there may be a higher degree of subjectivity in interpreting the data , so researchers need to reflect on this and transparently convey to audiences how the research was conducted.

Being aware of these strengths and limitations can help researchers design and conduct case study research effectively and interpret and report the findings appropriately.

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More From Forbes

Creating an effective case study: 12 important tips to remember.

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The practical application of a theory or idea is the most effective way of demonstrating its usefulness. Case studies allow for the dissection of practical applications to uncover the thinking that led to them.

The best thing about case studies is that they can be used as a learning tool for both successful concepts as well as failed ones, while also serving as a valuable business card when approaching new customers. Developing a case study, however, requires delving into the background of a project and uncovering what made it good or bad. In addition, the information has to be packed in such a way to emphasize your skills and creativity without being overly promotional.

To help, 12 members of Forbes Agency Council examine the key elements to keep in mind when creating an effective case study.

Members explain how to create an effective and powerful case study for your business.

1. Don't Make It About Yourself

The wrong way to approach a case study is to make it about you and your process. The reader cares less about your motivation and more about the results your efforts created. Start off by describing the results that you created and then go into the general detail of your strategic and tactical approach to delivering those results. - John Gumas , Gumas Advertising

2. Tell A Story

The best case studies tell a story, rather than recite a chronology of facts or data points. To create a story arc, start with a few sentences describing the situation, followed by a few sentences highlighting the "dramatic tension" (e.g. X almost happened, Y threatened to derail the effort), and conclude with a few sentences tying the resolution to the value or point of the product or service. - Beth Noymer Levine , SmartMouth Communications

3. Lead With A Solution

Case studies are, by their very nature, boring. It is important to break past that by creating case studies that strike at the very problem a lead needs help with. Leading with a problem and demonstrating how you fixed it is the best way to get attention -- especially if it can be produced in an engaging way, such as through video or audio media. - Stefan Pollack , The Pollack PR Marketing Group

4. Include Relevant Data

It's great that you worked with a certain company, but what did you really do for them? That should be defined in the case study. If you can't define it in numbers and results, then think about using the brand in a testimonial instead. A case study is just that -- a study of what happened in a particular case. Make sure you tell the whole story. - Christine Wetzler , Pietryla PR

5. Always Use Specific Numbers

If you're going to show an increase in a certain metric, use the actual number. When you say something like "we increased conversions by 500%," it sets off a red flag for people. They'll think you just made it up. But if you show real numbers and even have the screenshots to back it up, it'll become more relevant and believable. - Greg Trimble , Lemonade Stand

6. Keep It Succinct And Pass On The Fluff

The vast majority of people skim content, including case studies. You have to put yourself in your prospect's shoes and understand what they want. They're primarily looking for the success you've provided the client. So focus on that and skip on any fluff content that doesn't align around that. - Nishank Khanna , Demand Roll

7. Tailor Them To Your Audience

Sure, you're going to have generic case studies, but when seeing a client, ensure that you really understand the problem the client faces. Then make your case show how you've solved the problem before. You can highlight different capabilities based on different needs of the client. - Emilie Tabor , IMA - Influencer Marketing Agency

8. Make It Multi-Format

If you can get case studies, quotes and testimonials, always include hard data and tie it to revenue or cost stories. Beyond this, make it multi-format by leveraging graphics, video and text so that it can be consumed and promoted on various platforms. This will maximize the exposure and utility for your successful client case studies. - Zamir Javer , Jumpfactor

9. Let The Images Do The Work

Aside from ensuring a case study is focused on the problem your brand has solved for a customer, nothing brings it to life more than imagery. In lieu of a long-form case study, consider a photo essay with solid captions narrating the case study as a better option for illustrating the value of your product or service and keeping audiences truly engaged. - Emily Porter , Havas Formula

10. Paint A Picture For Your Prospect

Highlighting your wins is great, but remember that a case study should showcase how you solved a client's most pressing problem so that a new prospect can see how you got from point A to Z. This is how we like to tell our clients' success stories: client profile, the challenge, results, strategy and looking toward the future. Remember, the results are just one piece of the puzzle. - Bernard May , National Positions

11. Abstract It First

We think if we write it, someone will accept it. If you remove the outlet from the process, more often, you'll need to rewrite it. Develop the abstract or a couple of abstracts with four elements: company's expertise and solution; customer's industry and challenges; what solution you delivered; why that solution is so innovative. Offer the outlet a chance to contribute, then write with insight. - Dean Trevelino , Trevelino/Keller

12. Know When To Insert Them Into The Campaign

We've analyzed user footprint data on the inbound journey and see a clear trend. Most people are only interested in case studies once they are convinced that a service provider could be a good fit for them. Case studies usually come after reviewing staff profiles and thought leadership content. Insert them too soon and they lose their value in the sales campaign. - Randy Shattuck , The Shattuck Group

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How to write a case study: The ultimate guide + examples and templates

It would be great if we could wave a magic wand to convince prospects to buy your product or service… But we can’t. So, a case study is your next best option. 

They’re a powerful sales and marketing tool for those prospects that are sitting on the fence. The problem is, they’re often dry, bland, and anything but magical. Never fear, though, as we’ve done some in-depth case study analysis.

We’re here to show you how to write a case study that will convince customers to choose you over your competitors. To create something so compelling they’ll have no doubt about your ability to deliver results.

Whether this is your first or 100th stab at it, we’ve got you covered with tips and best practices, real-world examples, and ideas for how to format a case study.  

In this post, we’ll look at:

• What a case study is and why you need one
• What makes a good case study

What should a case study include?

Essential prep for creating a case study.

• How to write a good case study in 5 steps
• 8 further case study best practices
• 7 real-life case study examples
• 8 case study templates to get you started

🔍 Are you looking for some case study examples? This compilation of case study data and leadership input from just a few RingCentral SMB customers will show you exactly how they have modernized their business communication processes.  

What is a case study and why should you create one?

A case study is basically a document— or it can be a video—that outlines how a customer used your product to overcome a problem. It’s real-world proof that your product works and gets results.

If your product or service has helped customers get great results, a case study will help you showcase those results to your future customers. They’re an excellent way to attract more business, and can mean the difference between a lost opportunity and a really good end-of-quarter.

Why are case studies important?

Case studies present a living, breathing witness to how effective your product or service is. In other words, they represent the ultimate in social proof. While customer reviews can also be valuable in influencing a potential client’s decision to buy from your company, they don’t pack the punch that case studies do.

That’s because with case studies, you can curate a story that highlights how well your product or service solved a real-life problem, and back it up with solid data. It demonstrates the value of your offering, while showing off your hard work in achieving success for a customer.

Case studies are relatable

Because you’re using real-world examples, rather than abstract concepts of what your product or service represents, case studies are fully relatable to potential new customers. 

They can put themselves in the shoes of the subject and empathize with their pain points—and realize that there’s a way to get similar results for themselves.

They’re unbiased

Whereas a landing page or product page can be purely self-promotional, a case study comes across as more authentic and unbiased. Instead of you saying how awesome your product is, the subject is saying it, and that counts for a lot. 

If they’ve switched to you from a competitor, that’s even better as it positions your product as superior without you having to spell it out.

They increase your authority

Case studies also demonstrate your ability to solve problems for your customers, positioning you as experts in your industry and building trust. The more case studies you have, the more established you’ll look. As in: “Wow, they have so many happy clients—they must be doing something right!”

They inspire readers

A narrative that’s engaging to read will get people interested in your company and inspire them to take a look around your website. And case studies give readers variety alongside other content formats such as product pages and blogs. They’re also an extra opportunity to add a CTA and nudge readers toward taking an action.

They have many uses

Case studies are versatile. You can publish and promote them in various places alongside your website—give a taster in social media posts with a link to the full article, add the video to your YouTube channel, share the stories in sales presentations. You can also extract elements like quotes from featured customers and repurpose them in other content, such as infographics.

In most cases it’s best to have case studies easily available on your website, not as downloadable gated content, but you do have this option for lead generation. You could write a blog post with a short version of the story, and offer the full version to readers in return for giving you their contact details.

They encourage loyalty

When you ask an existing customer to be the subject of a case study, it not only makes them feel special but it also reminds them of the benefits of your solution—which helps to reaffirm their loyalty. Plus, they’re getting extra brand exposure and a backlink to their own website, which boosts both their traffic and their authority online.  

In fact, there’s nothing to stop you reaching out to former customers who achieved good results with you before moving on (it happens). You never know, a reminder of you might even bring them back!

What makes a good case study? 

First, it’s helpful to highlight what makes a lot of case studies bad: most are painfully boring. What they have is research and detail, but what they lack is a cohesive, consumable story. 

They list numbers and contain data, but the reader isn’t sure what it all means or why it’s relevant to their problem. They end up existing as technical documents that do little to persuade or excite anyone. That’s unfortunate because they have the potential to be a powerful sales tool that can help you close big deals in the decision-making phase. 

So how do you write a case study that’s actually effective, then? Here are three characteristics every good case study should have:

It’s digestible

There’s no hard and fast rule on how long a case study should be. But it’s always a good idea to ask “how short can we make it?” 

A good case study avoids the unnecessary minutiae, knows what it’s trying to say, and communicates it quickly and without ambiguity. With a few exceptions, effective case studies are concise and clear. 

It’s thorough

On the other side of the length equation, being thorough is also important. Case study writing is all about making impressive claims about how a product helped someone achieve a certain result. However, it also needs to explain how it happened. 

Good case studies include key details that show how the customer got from A to B using the product—something you don’t get with customer reviews . Don’t make your reader work too hard to visualize the story. If you can use images and videos, use them.

It’s a story

Yes, case studies are sales tools. But the ones really worth reading tell a compelling story with a beginning, middle, and end. They beg to be read all the way through. Often, they present a problem that creates tension and demands a solution. And remember, in this story, the customer is the hero—not you.

Caveat: There is no one-size-fits-all approach for what to include in a case study. But, in general, there is a recognized case study format with certain sections you should feature to make it clearer and more impactful.  This format typically includes:

• Title: This should be concise and engaging. Naming your document “A Case Study of RingCentral” sounds dry. A headline like “Navigating Communications in a Remote World: A RingCentral Case Study” has more impact and explains what theme you’re exploring.
• Executive summary: Consider this like an abstract. Provide a brief overview of the case study, including the key purpose, approaches, findings, and solutions, without giving too much away.
• Introduction: Provide essential details about the customer in context.
• Challenges: Here’s where you highlight where your customer was before using your product or service and where they wanted to be. Present raw data where applicable and discuss any other background information that shows their struggles.
• Solution: Here’s where you get to show off. Explain how and why the customer chose your company, and how a specific product or service helped them achieve their objectives.
• Results: Time to get tangible. Dive into how the customer used your product, the results they saw, and long-lasting benefits. Incorporate any testimonials and statistics that showcase these results.
• Conclusion: Case studies are just as much about the future as the present. Use this closing section to highlight where your case study customer is going next thanks to your solution. Consider including a call-to-action here to encourage your prospect to take the next step.

How long should a case study be?

There isn’t a definitive answer to this question, as the length of a case study can vary depending on factors such as the size of the project you’re talking about. It also depends on the type of case study—for example, if it’s in the form of a video then a couple of minutes is enough. (We’ll explore the different types a little later on in this post.)

Balance is the key here. You’ll need to to include enough information to convey the story properly and hook the reader in, but not so much that they get overwhelmed or the message of the story gets lost amid the detail. The last thing you want them to think is “TL;DR”.

It’s about being concise, and not allowing yourself to get carried away with the story. Only include what needs to be included, so that readers can clearly understand the subject’s pain point, the reason your solution was a good fit, and the success it achieved.

Remember that not every part of the case study has to be in narrative form. You can pull out stats and display them as graphics, highlight direct quotes or other key information, or add a photo of the subject. If your case study is on the longer side, break up the text with subheadings, bullet points, and white space.

Before you start actually writing, there’s a bit of prep work you’ll need to do to make sure your case study is amazing.

1. Choose your customer

You may have many customers who’ve seen great results using your product (let’s hope!). But you can’t just pick a name out of a hat and showcase their results. So, what’s the best way of selecting a client for a case study?

Steer clear of customers who may not be the right fit for your audience or whose results may not be typical.

For example, don’t feature an enterprise company when most of your customers are small businesses. Or a business achieving a 90% customer retention rate when most of them see 70% on average (still impressive, though).

When considering which customer to use, start by creating a list of customers that meet these criteria:

They’ve seen good results with your product or service

The numbers are what really matter. So choose customers that have seen strong results using your product (like Conair did with RingCentral). But be careful about showcasing exceptionally good results if they’re not likely to be repeated by most.

They have a respected and recognizable brand

Strong brands give your product instant social proof. They prove that you’re established and trustworthy. That alone can make you a front-runner in the decision-making process. After all, if Big Brand X trusts you, so can a prospect.

They’re a typical customer

Good results don’t carry as much weight when they’re achieved by companies in other industries or verticals. Identify current customers that are similar to your target audience. A client who has faced similar challenges and pain points will evoke empathy and stir up interest in the mind of your prospective clients.

So, if you sell enterprise software, choose enterprise customers. If you’re a consultant in the healthcare industry, choose a customer that works in healthcare.

With your list in hand, you can start reaching out. Picking up the phone can be a lot more effective than sending an email. It’s more personal, lets you build rapport, and is harder to ignore. 

Try to get in touch with customers who use or are very familiar with your product or service—someone who can speak to results. Tell them you’re interested in writing a case study and you’d love to hear more about the results they’ve achieved. Be clear about what the process involves on their part—whether it’s a list of questions in an email, a phone call, or if it involves a camera and crew.  

If you’ve provided value, your customer is more likely to see you as a partner rather than a vendor and, hopefully, will be happy to participate. Remember, you’re also shining a spotlight on their own success. So it’s a win-win.  

That said, you may hear “no” a few times, too. Don’t get discouraged. Some customers will decline for different reasons, regardless of the results they’ve achieved with your product.

RingCentral: W2O

2. Begin your research

Start collecting information about your customer. This is easier if you work as a team. From sales to content marketing to customer service, everyone who’s been in touch with customers will have insight about their experience.

They can help you understand what your customers do and sell, and what challenges they’re facing. Identify the stakeholders you need to speak with—anyone in the company who uses your product—from the CEO to the marketing intern. Collect stats, even ones you don’t think are relevant—they may be later.

3. Ask the right questions

Smart questions get insightful answers. Here are some examples of great questions to start with: 

• “What were some of the bigger challenges you faced before using our product?”
• “How does our product help you reach your individual goals?”
• “Which key metrics have improved most since using our product/service?”
• “Which parts of your business have been impacted most, and how?”
• “How long did it take to roll out our product?”

But don’t stop there. Use these questions to segue into deeper, more targeted questions that underscore the real-world benefits of your product. Let the conversation flow naturally—this is the magic of interviews. You can’t always plan for what interesting topics come up next.

4. Identify your target audience

Beyond your customer’s industry, consider who the target audience of the case study is. Who will see it? What group of people does it need to influence?

While it’s often high-level executives who make large purchase decisions, employees at all levels can act as a champion for your product or brand. Your case study may have to persuade an IT worker that your product or service is going to make their job easier. Meanwhile, it may also need to convince the CFO that they’ll see a real return on investment.

5. Identify the top three things you want to highlight

During the initial research phase, you’ve likely uncovered a lot of interesting information about your customer and their experiences with your product. 

While it might be tempting to use it all, when you write a case study, you should quickly and clearly communicate the value of your product. Go through this information and identify the three most important business results you want to feature, like we did in the Barx Parx example shown below.

Stats and key performance indicators (KPIs) to consider using in your case study:

• Ramp up time : How long did it take to get started with your product? Did it improve any other facet of their workflow? 
• Sales results : How did the product impact your customer’s bottom line?
• Total return on investment (ROI) : How long did it take to earn more than they spent on your product?
• Productivity increases : Which teams saw improvements in process and workflow? And by how much?

6. Choose your format

So, what does a case study look like visually? It doesn’t have to exist only as a PDF attachment in a late-stage deal email (although there’s nothing wrong with that). Consider the format. Think about who’s going to read it (or watch it). 

Do you want to turn this into fancy interactive content? Does your prospect have the time and interest to dig into the details? Or do they just want the facts? Choose the format that you think best engages the audience that you’re selling to. 

Here are some options:

Report format

This long-form document has been the gold standard for B2B case studies for many years. It’s effective when the subject matter is complex and demands detail.

Here’s how Zendesk presented their case study with IDC as a report .

Remember, a CTO who’s evaluating large-scale business communications platforms for a multi-year deal is going to want more information than a marketing manager who’s evaluating a new social media ad platform.

Keeping things short and sweet is often the best way to get your message heard. By focusing on the key points, you can highlight the biggest wins at just a glance. 

Most report format case studies can be easily condensed into a one-page document. This is ideal for prospects (and salespeople) who are short on time and prefer something they can quickly scan.

Few things can tell a story the way that video can, and case studies are no exception. They give you an unmatched level of creative freedom and storytelling using music, lighting, pacing, and voice that can evoke emotions and persuade someone using more than just numbers and facts. 

And at just a couple of minutes long, they can do a lot of heavy lifting in not a lot of time.

Dropbox: Expedia

Infographic

If you’re wondering how to make a case study more memorable, it’s worth noting that people love infographics. They’re an excellent way to convey important data in a simple, eye-pleasing way.

If your case study requires you to use a lot of data to prove a point—or if visualizing data can make the results more clear—building an infographic case study can be a great investment.

How to write a case study in 5 steps

Congrats. You’ve done the research. You’ve made the calls. You’ve pored over all the details. Now, all you have to do is write. 

Here are five simple steps that’ll help you better understand how to create a case study that champions your customer and clearly showcases the real-world value of your products or services. 

1. Introduce the customer

Set the stage for your case study with an introduction. Briefly explain who your customer is with a bit of background information that can include their industry, product, company size, and location. 

You don’t have to dig into the nuts and bolts of their business, but you do want the reader to understand who they are and what they do. The more color you can provide here, the more impactful it’ll be when you show the awesome results this customer saw because they chose you.

2. State the problem

Every product or service is a possible solution to a problem. Explain the problem (or problems) that you helped your customer overcome. Describe the larger impact of the issue. Maybe it was customers leaving. Perhaps it was bad leads—or good leads that were never followed up on.

Use this as an opportunity to clearly show what was at stake, and make sure you leave the jargon out of it. Frame the problem in simple terms that any reader can understand. 

3. Introduce your product

This is where you begin solving the problem. Briefly introduce your proposed solution and what it does.

Start on a general level, then apply it to the challenge the customer was experiencing. Talk about which teams or individuals used your product and how they used it. Be sure to make the connection between the customer’s problem and your solution crystal clear.

4. Show results

The big reveal. What kind of results was your customer able to achieve using your product or service? Speak to how they solved the problem descriptively, but also with cold, hard numbers. 

Not everything can be measured in numbers (sometimes, peace of mind is a powerful benefit all on its own), but whenever you can, back up your story with the stats. At the very least, this will make it easy for a CFO—or a prospective customer who wants to buy—to justify buying your product.

For example: 

The customer saw a 33% increase in web traffic, a large influx of social media activity, and a 10% boost in revenue over the duration of the campaign.

5. Prove it

Don’t forget to show your math. How you get the results is just as important as the results themselves. What specific steps were taken to get those results? Not only will this help validate your claims, it makes it easier to envision how the reader may be able to achieve them, too.

8 Further case study best practices

That’s how to write a case study in broad strokes, but you might be wondering how to write a business case study that stands out from the crowd? Here are some top tips:

1. Avoid jargon 

As a subject matter expert in your line of work, it can be tempting to go into as much jargony detail as possible. This is normal as it’s often the language we use at work every day. 

Remember, though, that your customer probably doesn’t speak that language. When in doubt, try to put yourself in the shoes of someone who doesn’t live and breathe your product or industry.. 

2. Spend time on your title

It’s tempting to use the case study’s most interesting or impressive KPI as your title. But that also gives away the ending before the story begins, and skips details that are important for context in the process. Try writing a title that piques interest without being a spoiler.

3. Edit. Then edit again. 

Once you’ve got your first draft completed (and the jargon removed), edit the case study. When writing case studies, one proofread is never enough. A few best practices here:

• Look for and eliminate unnecessary adjectives—simple English is better.
• Speak in an active voice. 
• Look for details that get in the way of the story. 

And then do it all over again until you can’t edit it down anymore without losing the essence of the story.

4. Pay attention to the imagery

Well-designed charts, graphs, images, or infographics can do the heavy lifting of several pages of text in just seconds. 

They can also help break up large pieces of text, making the case study easier to read—and nicer to look at. After all, the end goal is to have these read all the way through.

Here’s an example of a graphic from a longer CPA Canada infographic (that includes a short case study embedded inside it): 

5. Pull quotes

Hard data and results are good. But a customer quote is a great piece of social proof and adds a human element to your case study. And that makes your results more believable. 

Here’s an example of what that looks like, from a RingCentral case study :

6. Make it scannable

Some people will take the time to read your case study front to back and absorb every detail. Some won’t give it more than a single glance. And sometimes, that person is the decision-maker. 

Make the most important results easy to spot, read, and retain at a glance. Write headings that are descriptive—if someone just scanned them, would they be able to get the gist of the story? Consider putting a summary at the very beginning of the study, or call out impressive results in a larger font size.

7. Record your interviews

Ditch the pen and paper. If you’re conducting one-on-one interviews over the phone, you can save yourself a lot of time and energy by recording the conversation (with your customer’s consent, of course). 

There are tools that can make this easier too—you might find one or two in your marketing stack. For example, you could use RingSense AI for automatic note taking, summarizing, and transcribing.

8. Don’t forget the call to action (CTA)

Your prospect is excited because your case study has done an excellent job of showing how your product or service can help drive results for customers. Now, how do they get in touch with you to learn more? 

Whether it’s a button that links to your website, an email address, or a phone number, make sure there’s an easy way of getting in touch with you in the case study.

7 Examples of great case studies from real-life companies

So, that’s the theory covered, but what do great case studies look like in practice? We’ve included a few elements from RingCentral customer stories as examples above, but let’s dig a little deeper into two more of our case studies:

RingCentral: How Ryder made significant savings with cloud communications

This case study is about Ryder Systems, a Fortune 500 transportation company who modernized their IT communications infrastructure with RingCentral.

We start off with a subheading that sums up the story, plus the key stats at a glance. There’s another stats panel farther down the page to help break up the wall of text. Pull quotes also achieve this, but that’s not the only reason why we like to use quotes.

When the quote comes directly from a senior manager at the company we’ve helped, they’re telling an important part of the story in their own words. In this case, there’s a reference to the amount of money Ryder has saved with RingCentral, and a mention of the platform’s all-in-one cloud capabilities.

The content introduces Ryder and makes it clear that they are a big name in transportation (the single largest truck supplier in the US) and a noteworthy firm in general, as evidenced by membership of the Fortune 500 and Forbes’ Most Admired Companies. 

If a big player like this is happy to trust RingCentral with their business, that says a lot about our credentials too.

We mentioned earlier that customers are attracted to testimonials from companies similar to themselves. But RingCentral caters to businesses of all sizes—so if SMBs are reading this case study, we think they’ll see our association with a large company as “social proof” and a sign of our trustworthiness across the board.

The story goes on to explore Ryder’s pain points and how RingCentral solved them, inspiring other companies with similar problems to take action (i.e. to replace legacy systems that are slow and expensive). For further encouragement, it details how Ryder were so happy with the initial success that they also went on to implement RingCentral’s contact center solution.

RingCentral: Helping Dispute Nation to change lives

Just to illustrate our point about RingCentral serving all sizes of business, here’s a case study for a much smaller company—consumer advocacy organization Dispute Nation, which has 10 employees.

Again, the story begins with stats and a pull quote from a company representative. In keeping with Dispute Nation’s values, it focuses less on the financial savings or efficiency brought by RingCentral tools but on how our solution helps this company to help others.

Drawing empathy from other startups and fast-growing small businesses, we mention how demand for the company’s services grew very quickly. This makes it obvious why they needed a unified communications system to reach all their clients by phone, SMS, and fax.

The case study highlights how digital fax in particular helps Dispute Nation to get client cases resolved sooner. Another pull quote mentions some of the other benefits of RingCentral, like automation and integrations with other tools. 

There are nods to mobility and flexibility, plus security and data privacy which will resonate with other highly-regulated industries.

The tale finishes strongly with the company founder’s assertion that “RingCentral is helping Dispute Nation improve more lives”. Readers who’ve been inspired to learn more can easily navigate from this page to explore products, resources, and get in touch.

RingCentral is far from the only company to have recognized the importance of this kind of content.

Here are some more real-life case studies from other businesses you might just recognize:

RingCentral iswe’re far from the only company to have recognized the importance of this kind of content.

Mailchimp: Make a connection in real life with postcards

What we like about it: The title doesn’t give everything away all at once, and the case study tells a story with a beginning, middle, and end. The sections are clearly titled and organized, and the results are easy to find. As a bonus: the video adds a believable human element.

LinkedIn: How Adobe achieves alignment and ABM success with LinkedIn

What we like about it: It’s detailed without being a novella. It understands and speaks to the enterprise customer. The key points are in bullet format and easy to read. The important wins are highlighted. And the video makes the content easy to engage with.

Hootsuite: How Meliá became one of the most influential hotel chains on social media

What we like about it: The title makes you want to read the whole customer story. They’ve embedded a well-produced video high on the page, so you can choose to watch it before you read on. The design and layout of the page makes the content and images easy to consume, and the results can’t be missed. Also, they weren’t shy about adding CTAs.

Slack: So yeah, we tried Slack

What we like about it: This case study follows the tried and true format of customer, problem, solution, and results. It uses humor and relatable characters throughout to support the story and keep your attention. And it’s only two minutes long so it gets the point across quickly.

Assetworks: South Carolina School Board Insurance Trust

What we like about it: This case study tackles the otherwise complex and technical topic, and simplifies it as an infographic using images to make the results clear. It’s concise and easy to follow because you can see the math without actually doing any math.

8 Case study templates to get you started

Starting from scratch can be time-consuming. To help you, we’ve drawn together a few templates:

The generic one

Generic doesn’t mean boring! Canva’s templates are great if you need something concise and simple that still looks professional . A free account will give you access to several well-designed templates, including this one :

The layout is provided for you, so it’s quick and easy to customize with your branding and content. Don’t be afraid to use this as a foundation, then add in visual elements like infographics and videos.

The data-driven one

If your key messages revolve around numbers, start with a template structure that lets you highlight these. HubSpot has a data-focused template where you can pack in graphs, charts, and other visuals to drive your message home:

The industry-specific one

Not every template suits every company. Visme offers different templates created for different industries, including real estate, financial services, and healthcare.

The problem-solution-impact one

This format takes a graphical rather than narrative approach, which helps readers to visualize the events and looks colorful and appealing on the page. The template is available as a free download from Smartsheet:

The idea of this is to present the story in a logical and sequential way. It starts with the challenge faced by the subject of the case study, looks at the solution your company provided, and shows what the outcome was.

Of course, you could choose to combine this with other elements like text content, stats, and quotes—making the “problem-solution-impact” graphic the main focus of the case study.

The product-specific one

You can choose to focus your case study on a particular product, highlighting key features and the  practical applications in the real world. 

It leans into the experience that the customer has had with the product—i.e., what it feels like to use it—and the specific benefits. This one is a good choice if the customer hasn’t been using the product for very long, and you haven’t yet gathered a lot of metrics.

HubSpot has a template for this purpose :

The in-depth report one

Using the style of an in-depth report can be useful when you’ve worked with the customer on a complex project and you need to include a lot of detail.  

This template —another free one from Smartsheet—includes elements like decision criteria, data analysis, and the implementation plan:

Just be careful with this one as you don’t want readers to be put off by a lot of text. Make sure the style is conversational and engaging, not dry and formal.

The employee story one

Okay, stick with us here—this one’s a little different. As well as asking customers to tell their stories, how about getting employees to share what it’s like to work for your company, or their experience of working on a particular project?

Employee stories or testimonials are often used for recruitment purposes, but they’re also a valuable form of marketing for potential customers. That’s because happy, engaged employees represent a company that cares about its people, which all helps you to build trust.

This example from Vanguard isn’t a template as such, but you can use it to inspire your own version. (It doesn’t have to be a video—you could still use a written narrative with direct quotes, photos, and stats on employee satisfaction.)

BONUS TEMPLATE: Form for customers participating in case studies

Earlier in this post, we briefly covered some of the questions you’ll need to ask your customers when putting together case studies. But it’s always helpful to have a visual guide, so we’re including this template from Vitally , which provides a framework for collaborating with customers and collecting the relevant data. 

You can adapt this to your own needs by adding further questions.

The final word on how to write a case study…

Sure, an ad or boosted social media post can make someone aware of your brand or that your product exists, and a landing page can tell them how your product can solve their problem. 

But there’s nothing quite as powerful as someone else singing your praises. 

And that’s exactly what a case study does. Spend the time to do it right and it has the potential to deliver huge ROI no matter how big or small your company is. And not just once—but over and over again.

Originally published Jun 15, 2024, updated Sep 26, 2024

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10 Case Study Advantages and Disadvantages

Chris Drew (PhD)

Dr. Chris Drew is the founder of the Helpful Professor. He holds a PhD in education and has published over 20 articles in scholarly journals. He is the former editor of the Journal of Learning Development in Higher Education. [Image Descriptor: Photo of Chris]

Learn about our Editorial Process

A case study in academic research is a detailed and in-depth examination of a specific instance or event, generally conducted through a qualitative approach to data.

The most common case study definition that I come across is is Robert K. Yin’s (2003, p. 13) quote provided below:

“An empirical inquiry that investigates a contemporary phenomenon within its real-life context, especially when the boundaries between phenomenon and context are not clearly evident.”

Researchers conduct case studies for a number of reasons, such as to explore complex phenomena within their real-life context, to look at a particularly interesting instance of a situation, or to dig deeper into something of interest identified in a wider-scale project.

While case studies render extremely interesting data, they have many limitations and are not suitable for all studies. One key limitation is that a case study’s findings are not usually generalizable to broader populations because one instance cannot be used to infer trends across populations.

Case Study Advantages and Disadvantages

1. in-depth analysis of complex phenomena.

Case study design allows researchers to delve deeply into intricate issues and situations.

By focusing on a specific instance or event, researchers can uncover nuanced details and layers of understanding that might be missed with other research methods, especially large-scale survey studies.

As Lee and Saunders (2017) argue,

“It allows that particular event to be studies in detail so that its unique qualities may be identified.”

This depth of analysis can provide rich insights into the underlying factors and dynamics of the studied phenomenon.

2. Holistic Understanding

Building on the above point, case studies can help us to understand a topic holistically and from multiple angles.

This means the researcher isn’t restricted to just examining a topic by using a pre-determined set of questions, as with questionnaires. Instead, researchers can use qualitative methods to delve into the many different angles, perspectives, and contextual factors related to the case study.

We can turn to Lee and Saunders (2017) again, who notes that case study researchers “develop a deep, holistic understanding of a particular phenomenon” with the intent of deeply understanding the phenomenon.

3. Examination of rare and Unusual Phenomena

We need to use case study methods when we stumble upon “rare and unusual” (Lee & Saunders, 2017) phenomena that would tend to be seen as mere outliers in population studies.

Take, for example, a child genius. A population study of all children of that child’s age would merely see this child as an outlier in the dataset, and this child may even be removed in order to predict overall trends.

So, to truly come to an understanding of this child and get insights into the environmental conditions that led to this child’s remarkable cognitive development, we need to do an in-depth study of this child specifically – so, we’d use a case study.

4. Helps Reveal the Experiences of Marginalzied Groups

Just as rare and unsual cases can be overlooked in population studies, so too can the experiences, beliefs, and perspectives of marginalized groups.

As Lee and Saunders (2017) argue, “case studies are also extremely useful in helping the expression of the voices of people whose interests are often ignored.”

Take, for example, the experiences of minority populations as they navigate healthcare systems. This was for many years a “hidden” phenomenon, not examined by researchers. It took case study designs to truly reveal this phenomenon, which helped to raise practitioners’ awareness of the importance of cultural sensitivity in medicine.

5. Ideal in Situations where Researchers cannot Control the Variables

Experimental designs – where a study takes place in a lab or controlled environment – are excellent for determining cause and effect . But not all studies can take place in controlled environments (Tetnowski, 2015).

When we’re out in the field doing observational studies or similar fieldwork, we don’t have the freedom to isolate dependent and independent variables. We need to use alternate methods.

Case studies are ideal in such situations.

A case study design will allow researchers to deeply immerse themselves in a setting (potentially combining it with methods such as ethnography or researcher observation) in order to see how phenomena take place in real-life settings.

6. Supports the generation of new theories or hypotheses

While large-scale quantitative studies such as cross-sectional designs and population surveys are excellent at testing theories and hypotheses on a large scale, they need a hypothesis to start off with!

This is where case studies – in the form of grounded research – come in. Often, a case study doesn’t start with a hypothesis. Instead, it ends with a hypothesis based upon the findings within a singular setting.

The deep analysis allows for hypotheses to emerge, which can then be taken to larger-scale studies in order to conduct further, more generalizable, testing of the hypothesis or theory.

7. Reveals the Unexpected

When a largescale quantitative research project has a clear hypothesis that it will test, it often becomes very rigid and has tunnel-vision on just exploring the hypothesis.

Of course, a structured scientific examination of the effects of specific interventions targeted at specific variables is extermely valuable.

But narrowly-focused studies often fail to shine a spotlight on unexpected and emergent data. Here, case studies come in very useful. Oftentimes, researchers set their eyes on a phenomenon and, when examining it closely with case studies, identify data and come to conclusions that are unprecedented, unforeseen, and outright surprising.

As Lars Meier (2009, p. 975) marvels, “where else can we become a part of foreign social worlds and have the chance to become aware of the unexpected?”

Disadvantages

1. not usually generalizable.

Case studies are not generalizable because they tend not to look at a broad enough corpus of data to be able to infer that there is a trend across a population.

As Yang (2022) argues, “by definition, case studies can make no claims to be typical.”

Case studies focus on one specific instance of a phenomenon. They explore the context, nuances, and situational factors that have come to bear on the case study. This is really useful for bringing to light important, new, and surprising information, as I’ve already covered.

But , it’s not often useful for generating data that has validity beyond the specific case study being examined.

2. Subjectivity in interpretation

Case studies usually (but not always) use qualitative data which helps to get deep into a topic and explain it in human terms, finding insights unattainable by quantitative data.

But qualitative data in case studies relies heavily on researcher interpretation. While researchers can be trained and work hard to focus on minimizing subjectivity (through methods like triangulation), it often emerges – some might argue it’s innevitable in qualitative studies.

So, a criticism of case studies could be that they’re more prone to subjectivity – and researchers need to take strides to address this in their studies.

3. Difficulty in replicating results

Case study research is often non-replicable because the study takes place in complex real-world settings where variables are not controlled.

So, when returning to a setting to re-do or attempt to replicate a study, we often find that the variables have changed to such an extent that replication is difficult. Furthermore, new researchers (with new subjective eyes) may catch things that the other readers overlooked.

Replication is even harder when researchers attempt to replicate a case study design in a new setting or with different participants.

Comprehension Quiz for Students

Question 1: What benefit do case studies offer when exploring the experiences of marginalized groups?

a) They provide generalizable data. b) They help express the voices of often-ignored individuals. c) They control all variables for the study. d) They always start with a clear hypothesis.

Question 2: Why might case studies be considered ideal for situations where researchers cannot control all variables?

a) They provide a structured scientific examination. b) They allow for generalizability across populations. c) They focus on one specific instance of a phenomenon. d) They allow for deep immersion in real-life settings.

Question 3: What is a primary disadvantage of case studies in terms of data applicability?

a) They always focus on the unexpected. b) They are not usually generalizable. c) They support the generation of new theories. d) They provide a holistic understanding.

Question 4: Why might case studies be considered more prone to subjectivity?

a) They always use quantitative data. b) They heavily rely on researcher interpretation, especially with qualitative data. c) They are always replicable. d) They look at a broad corpus of data.

Question 5: In what situations are experimental designs, such as those conducted in labs, most valuable?

a) When there’s a need to study rare and unusual phenomena. b) When a holistic understanding is required. c) When determining cause-and-effect relationships. d) When the study focuses on marginalized groups.

Question 6: Why is replication challenging in case study research?

a) Because they always use qualitative data. b) Because they tend to focus on a broad corpus of data. c) Due to the changing variables in complex real-world settings. d) Because they always start with a hypothesis.

Lee, B., & Saunders, M. N. K. (2017). Conducting Case Study Research for Business and Management Students. SAGE Publications.

Meir, L. (2009). Feasting on the Benefits of Case Study Research. In Mills, A. J., Wiebe, E., & Durepos, G. (Eds.). Encyclopedia of Case Study Research (Vol. 2). London: SAGE Publications.

Tetnowski, J. (2015). Qualitative case study research design.  Perspectives on fluency and fluency disorders ,  25 (1), 39-45. ( Source )

Yang, S. L. (2022). The War on Corruption in China: Local Reform and Innovation . Taylor & Francis.

Yin, R. (2003). Case Study research. Thousand Oaks, CA: Sage.

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Home » Case Study – Methods, Examples and Guide

Case Study – Methods, Examples and Guide

Table of Contents

A case study is a research method that involves an in-depth examination and analysis of a particular phenomenon or case, such as an individual, organization, community, event, or situation.

It is a qualitative research approach that aims to provide a detailed and comprehensive understanding of the case being studied. Case studies typically involve multiple sources of data, including interviews, observations, documents, and artifacts, which are analyzed using various techniques, such as content analysis, thematic analysis, and grounded theory. The findings of a case study are often used to develop theories, inform policy or practice, or generate new research questions.

Types of Case Study

Types and Methods of Case Study are as follows:

Single-Case Study

A single-case study is an in-depth analysis of a single case. This type of case study is useful when the researcher wants to understand a specific phenomenon in detail.

For Example , A researcher might conduct a single-case study on a particular individual to understand their experiences with a particular health condition or a specific organization to explore their management practices. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a single-case study are often used to generate new research questions, develop theories, or inform policy or practice.

Multiple-Case Study

A multiple-case study involves the analysis of several cases that are similar in nature. This type of case study is useful when the researcher wants to identify similarities and differences between the cases.

For Example, a researcher might conduct a multiple-case study on several companies to explore the factors that contribute to their success or failure. The researcher collects data from each case, compares and contrasts the findings, and uses various techniques to analyze the data, such as comparative analysis or pattern-matching. The findings of a multiple-case study can be used to develop theories, inform policy or practice, or generate new research questions.

Exploratory Case Study

An exploratory case study is used to explore a new or understudied phenomenon. This type of case study is useful when the researcher wants to generate hypotheses or theories about the phenomenon.

For Example, a researcher might conduct an exploratory case study on a new technology to understand its potential impact on society. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as grounded theory or content analysis. The findings of an exploratory case study can be used to generate new research questions, develop theories, or inform policy or practice.

Descriptive Case Study

A descriptive case study is used to describe a particular phenomenon in detail. This type of case study is useful when the researcher wants to provide a comprehensive account of the phenomenon.

For Example, a researcher might conduct a descriptive case study on a particular community to understand its social and economic characteristics. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a descriptive case study can be used to inform policy or practice or generate new research questions.

Instrumental Case Study

An instrumental case study is used to understand a particular phenomenon that is instrumental in achieving a particular goal. This type of case study is useful when the researcher wants to understand the role of the phenomenon in achieving the goal.

For Example, a researcher might conduct an instrumental case study on a particular policy to understand its impact on achieving a particular goal, such as reducing poverty. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of an instrumental case study can be used to inform policy or practice or generate new research questions.

Case Study Data Collection Methods

Here are some common data collection methods for case studies:

Interviews involve asking questions to individuals who have knowledge or experience relevant to the case study. Interviews can be structured (where the same questions are asked to all participants) or unstructured (where the interviewer follows up on the responses with further questions). Interviews can be conducted in person, over the phone, or through video conferencing.

Observations

Observations involve watching and recording the behavior and activities of individuals or groups relevant to the case study. Observations can be participant (where the researcher actively participates in the activities) or non-participant (where the researcher observes from a distance). Observations can be recorded using notes, audio or video recordings, or photographs.

Documents can be used as a source of information for case studies. Documents can include reports, memos, emails, letters, and other written materials related to the case study. Documents can be collected from the case study participants or from public sources.

Surveys involve asking a set of questions to a sample of individuals relevant to the case study. Surveys can be administered in person, over the phone, through mail or email, or online. Surveys can be used to gather information on attitudes, opinions, or behaviors related to the case study.

Artifacts are physical objects relevant to the case study. Artifacts can include tools, equipment, products, or other objects that provide insights into the case study phenomenon.

How to conduct Case Study Research

Conducting a case study research involves several steps that need to be followed to ensure the quality and rigor of the study. Here are the steps to conduct case study research:

• Define the research questions: The first step in conducting a case study research is to define the research questions. The research questions should be specific, measurable, and relevant to the case study phenomenon under investigation.
• Select the case: The next step is to select the case or cases to be studied. The case should be relevant to the research questions and should provide rich and diverse data that can be used to answer the research questions.
• Collect data: Data can be collected using various methods, such as interviews, observations, documents, surveys, and artifacts. The data collection method should be selected based on the research questions and the nature of the case study phenomenon.
• Analyze the data: The data collected from the case study should be analyzed using various techniques, such as content analysis, thematic analysis, or grounded theory. The analysis should be guided by the research questions and should aim to provide insights and conclusions relevant to the research questions.
• Draw conclusions: The conclusions drawn from the case study should be based on the data analysis and should be relevant to the research questions. The conclusions should be supported by evidence and should be clearly stated.
• Validate the findings: The findings of the case study should be validated by reviewing the data and the analysis with participants or other experts in the field. This helps to ensure the validity and reliability of the findings.
• Write the report: The final step is to write the report of the case study research. The report should provide a clear description of the case study phenomenon, the research questions, the data collection methods, the data analysis, the findings, and the conclusions. The report should be written in a clear and concise manner and should follow the guidelines for academic writing.

Examples of Case Study

Here are some examples of case study research:

• The Hawthorne Studies : Conducted between 1924 and 1932, the Hawthorne Studies were a series of case studies conducted by Elton Mayo and his colleagues to examine the impact of work environment on employee productivity. The studies were conducted at the Hawthorne Works plant of the Western Electric Company in Chicago and included interviews, observations, and experiments.
• The Stanford Prison Experiment: Conducted in 1971, the Stanford Prison Experiment was a case study conducted by Philip Zimbardo to examine the psychological effects of power and authority. The study involved simulating a prison environment and assigning participants to the role of guards or prisoners. The study was controversial due to the ethical issues it raised.
• The Challenger Disaster: The Challenger Disaster was a case study conducted to examine the causes of the Space Shuttle Challenger explosion in 1986. The study included interviews, observations, and analysis of data to identify the technical, organizational, and cultural factors that contributed to the disaster.
• The Enron Scandal: The Enron Scandal was a case study conducted to examine the causes of the Enron Corporation’s bankruptcy in 2001. The study included interviews, analysis of financial data, and review of documents to identify the accounting practices, corporate culture, and ethical issues that led to the company’s downfall.
• The Fukushima Nuclear Disaster : The Fukushima Nuclear Disaster was a case study conducted to examine the causes of the nuclear accident that occurred at the Fukushima Daiichi Nuclear Power Plant in Japan in 2011. The study included interviews, analysis of data, and review of documents to identify the technical, organizational, and cultural factors that contributed to the disaster.

Application of Case Study

Case studies have a wide range of applications across various fields and industries. Here are some examples:

Business and Management

Case studies are widely used in business and management to examine real-life situations and develop problem-solving skills. Case studies can help students and professionals to develop a deep understanding of business concepts, theories, and best practices.

Case studies are used in healthcare to examine patient care, treatment options, and outcomes. Case studies can help healthcare professionals to develop critical thinking skills, diagnose complex medical conditions, and develop effective treatment plans.

Case studies are used in education to examine teaching and learning practices. Case studies can help educators to develop effective teaching strategies, evaluate student progress, and identify areas for improvement.

Social Sciences

Case studies are widely used in social sciences to examine human behavior, social phenomena, and cultural practices. Case studies can help researchers to develop theories, test hypotheses, and gain insights into complex social issues.

Law and Ethics

Case studies are used in law and ethics to examine legal and ethical dilemmas. Case studies can help lawyers, policymakers, and ethical professionals to develop critical thinking skills, analyze complex cases, and make informed decisions.

Purpose of Case Study

The purpose of a case study is to provide a detailed analysis of a specific phenomenon, issue, or problem in its real-life context. A case study is a qualitative research method that involves the in-depth exploration and analysis of a particular case, which can be an individual, group, organization, event, or community.

The primary purpose of a case study is to generate a comprehensive and nuanced understanding of the case, including its history, context, and dynamics. Case studies can help researchers to identify and examine the underlying factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and detailed understanding of the case, which can inform future research, practice, or policy.

Case studies can also serve other purposes, including:

• Illustrating a theory or concept: Case studies can be used to illustrate and explain theoretical concepts and frameworks, providing concrete examples of how they can be applied in real-life situations.
• Developing hypotheses: Case studies can help to generate hypotheses about the causal relationships between different factors and outcomes, which can be tested through further research.
• Providing insight into complex issues: Case studies can provide insights into complex and multifaceted issues, which may be difficult to understand through other research methods.
• Informing practice or policy: Case studies can be used to inform practice or policy by identifying best practices, lessons learned, or areas for improvement.

Advantages of Case Study Research

There are several advantages of case study research, including:

• In-depth exploration: Case study research allows for a detailed exploration and analysis of a specific phenomenon, issue, or problem in its real-life context. This can provide a comprehensive understanding of the case and its dynamics, which may not be possible through other research methods.
• Rich data: Case study research can generate rich and detailed data, including qualitative data such as interviews, observations, and documents. This can provide a nuanced understanding of the case and its complexity.
• Holistic perspective: Case study research allows for a holistic perspective of the case, taking into account the various factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and comprehensive understanding of the case.
• Theory development: Case study research can help to develop and refine theories and concepts by providing empirical evidence and concrete examples of how they can be applied in real-life situations.
• Practical application: Case study research can inform practice or policy by identifying best practices, lessons learned, or areas for improvement.
• Contextualization: Case study research takes into account the specific context in which the case is situated, which can help to understand how the case is influenced by the social, cultural, and historical factors of its environment.

Limitations of Case Study Research

There are several limitations of case study research, including:

• Limited generalizability : Case studies are typically focused on a single case or a small number of cases, which limits the generalizability of the findings. The unique characteristics of the case may not be applicable to other contexts or populations, which may limit the external validity of the research.
• Biased sampling: Case studies may rely on purposive or convenience sampling, which can introduce bias into the sample selection process. This may limit the representativeness of the sample and the generalizability of the findings.
• Subjectivity: Case studies rely on the interpretation of the researcher, which can introduce subjectivity into the analysis. The researcher’s own biases, assumptions, and perspectives may influence the findings, which may limit the objectivity of the research.
• Limited control: Case studies are typically conducted in naturalistic settings, which limits the control that the researcher has over the environment and the variables being studied. This may limit the ability to establish causal relationships between variables.
• Time-consuming: Case studies can be time-consuming to conduct, as they typically involve a detailed exploration and analysis of a specific case. This may limit the feasibility of conducting multiple case studies or conducting case studies in a timely manner.
• Resource-intensive: Case studies may require significant resources, including time, funding, and expertise. This may limit the ability of researchers to conduct case studies in resource-constrained settings.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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What Is a Case Study and Why You Should Use Them

Case studies can provide more insights into your business while helping you conduct further research with robust qualitative data analysis to learn more.

If you're in charge of running a company, then you're likely always looking for new ways to run your business more efficiently and increase your customer base while streamlining as many processes as possible.

Unfortunately, it can sometimes be difficult to determine how to go about implementing the proper program in order to be successful. This is why many business owners opt to conduct a case study, which can help significantly. Whether you've been struggling with brand consistency or some other problem, the right case study can identify why your problem exists as well as provide a way to rectify it.

A case study is a great tool that many businesses aren't even aware exists, and there are marketing experts like Mailchimp who can provide you with step-by-step assistance with implementing a plan with a case study. Many companies discover that not only do they need to start a blog in order to improve business, but they also need to create specific and relevant blog titles.

If your company already has a blog, then optimizing your blog posts may be helpful. Regardless of the obstacles that are preventing you from achieving all your professional goals, a case study can work wonders in helping you reverse this issue.

What is a case study?

A case study is a comprehensive report of the results of theory testing or examining emerging themes of a business in real life context. Case studies are also often used in the healthcare industry, conducting health services research with primary research interest around routinely collected healthcare data.

However, for businesses, the purpose of a case study is to help small business owners or company leaders identify the issues and conduct further research into what may be preventing success through information collection, client or customer interviews, and in-depth data analysis.

Knowing the case study definition is crucial for any business owner. By identifying the issues that are hindering a company from achieving all its goals, it's easier to make the necessary corrections to promote success through influenced data collection.

Why are case studies important?

Now that we've answered the questions, "what is a case study?" Why are case studies important? Some of the top reasons why case studies are important include:

• Understand complex issues: Even after you conduct a significant amount of market research , you might have a difficult time understanding exactly what it means. While you might have the basics down, conducting a case study can help you see how that information is applied. Then, when you see how the information can make a difference in business decisions, it could make it easier to understand complex issues.
• Collect data: A case study can also help with data tracking . A case study is a data collection method that can help you describe the information that you have available to you. Then, you can present that information in a way the reader can understand.
• Conduct evaluations: As you learn more about how to write a case study, remember that you can also use a case study to conduct evaluations of a specific situation. A case study is a great way to learn more about complex situations, and you can evaluate how various people responded in that situation. By conducting a case study evaluation, you can learn more about what has worked well, what has not, and what you might want to change in the future.
• Identify potential solutions: A case study can also help you identify solutions to potential problems. If you have an issue in your business that you are trying to solve, you may be able to take a look at a case study where someone has dealt with a similar situation in the past. For example, you may uncover data bias in a specific solution that you would like to address when you tackle the issue on your own. If you need help solving a difficult problem, a case study may be able to help you.

Remember that you can also use case studies to target your audience . If you want to show your audience that you have a significant level of expertise in a field, you may want to publish some case studies that you have handled in the past. Then, when your audience sees that you have had success in a specific area, they may be more likely to provide you with their business. In essence, case studies can be looked at as the original method of social proof, showcasing exactly how you can help someone solve their problems.

What are the benefits of writing a business case study?

Although writing a case study can seem like a tedious task, there are many benefits to conducting one through an in depth qualitative research process.

• Industry understanding: First of all, a case study can give you an in-depth understanding of your industry through a particular conceptual framework and help you identify hidden problems that are preventing you from transcending into the business world.
• Develop theories: If you decide to write a business case study, it provides you with an opportunity to develop new theories. You might have a theory about how to solve a specific problem, but you need to write a business case study to see exactly how that theory has unfolded in the past. Then, you can figure out if you want to apply your theory to a similar issue in the future.
• Evaluate interventions: When you write a business case study that focuses on a specific situation you have been through in the past, you can uncover whether that intervention was truly helpful. This can make it easier to figure out whether you want to use the same intervention in a similar situation in the future.
• Identify best practices: If you want to stay on top of the best practices in your field, conducting case studies can help by allowing you to identify patterns and trends and develop a new list of best practices that you can follow in the future.
• Versatility: Writing a case study also provides you with more versatility. If you want to expand your business applications, you need to figure out how you respond to various problems. When you run a business case study, you open the door to new opportunities, new applications, and new techniques that could help you make a difference in your business down the road.
• Solve problems: Writing a great case study can dramatically improve your chances of reversing your problem and improving your business.
• These are just a few of the biggest benefits you might experience if you decide to publish your case studies. They can be an effective tool for learning, showcasing your talents, and teaching some of your other employees. If you want to grow your audience , you may want to consider publishing some case studies.

What are the limitations of case studies?

Case studies can be a wonderful tool for any business of any size to use to gain an in-depth understanding of their clients, products, customers, or services, but there are limitations.

One limitation of case studies is the fact that, unless there are other recently published examples, there is nothing to compare them to since, most of the time, you are conducting a single, not multiple, case studies.

Another limitation is the fact that most case studies can lack scientific evidence.

Types of case studies

There are specific types of case studies to choose from, and each specific type will yield different results. Some case study types even overlap, which is sometimes more favorable, as they provide even more pertinent data.

Here are overviews of the different types of case studies, each with its own theoretical framework, so you can determine which type would be most effective for helping you meet your goals.

Explanatory case studies

Explanatory case studies are pretty straightforward, as they're not difficult to interpret. This type of case study is best if there aren't many variables involved because explanatory case studies can easily answer questions like "how" and "why" through theory development.

Exploratory case studies

An exploratory case study does exactly what its name implies: it goes into specific detail about the topic at hand in a natural, real-life context with qualitative research.

The benefits of exploratory case studies are limitless, with the main one being that it offers a great deal of flexibility. Having flexibility when writing a case study is important because you can't always predict what obstacles might arise during the qualitative research process.

Collective case studies

Collective case studies require you to study many different individuals in order to obtain usable data.

Case studies that involve an investigation of people will involve many different variables, all of which can't be predicted. Despite this fact, there are many benefits of collective case studies, including the fact that it allows an ongoing analysis of the data collected.

Intrinsic case studies

This type of study differs from the others as it focuses on the inquiry of one specific instance among many possibilities.

Many people prefer these types of case studies because it allows them to learn about the particular instance that they wish to investigate further.

Instrumental case studies

An instrumental case study is similar to an intrinsic one, as it focuses on a particular instance, whether it's a person, organization, or something different.

One thing that differentiates instrumental case studies from intrinsic ones is the fact that instrumental case studies aren't chosen merely because a person is interested in learning about a specific instance.

Tips for writing a case study

If you have decided to write case studies for your company, then you may be unsure of where to start or which type to conduct.

However, it doesn't have to be difficult or confusing to begin conducting a case study that will help you identify ways to improve your business.

Here are some helpful tips for writing your case studies:

1. Your case study must be written in the proper format

When writing a case study, the format that you should be similar to this:

Administrative summary

The executive summary is an overview of what your report will contain, written in a concise manner while providing real-life context.

Despite the fact that the executive summary should appear at the beginning of your case studies, it shouldn't be written until you've completed the entire report because if you write it before you finish the report, this summary may not be completely accurate.

Key problem statement

In this section of your case study, you will briefly describe the problem that you hope to solve by conducting the study. You will have the opportunity to elaborate on the problem that you're focusing on as you get into the breadth of the report.

Problem exploration

This part of the case study isn't as brief as the other two, and it goes into more detail about the problem at hand. Your problem exploration must include why the identified problem needs to be solved as well as the urgency of solving it.

Additionally, it must include justification for conducting the problem-solving, as the benefits must outweigh the efforts and costs.

Proposed resolution

This case study section will also be lengthier than the first two. It must include how you propose going about rectifying the problem. The "recommended solution" section must also include potential obstacles that you might experience, as well as how these will be managed.

Furthermore, you will need to list alternative solutions and explain the reason the chosen solution is best. Charts can enhance your report and make it easier to read, and provide as much proof to substantiate your claim as possible.

Overview of monetary consideration

An overview of monetary consideration is essential for all case studies, as it will be used to convince all involved parties why your project should be funded. You must successfully convince them that the cost is worth the investment it will require. It's important that you stress the necessity for this particular case study and explain the expected outcome.

Execution timeline

In the execution times of case studies, you explain how long you predict it will take to implement your study. The shorter the time it will take to implement your plan, the more apt it is to be approved. However, be sure to provide a reasonable timeline, taking into consideration any additional time that might be needed due to obstacles.

Always include a conclusion in your case study. This is where you will briefly wrap up your entire proposal, stressing the benefits of completing the data collection and data analysis in order to rectify your problem.

2. Make it clear and comprehensive

You want to write your case studies with as much clarity as possible so that every aspect of the report is understood. Be sure to double-check your grammar, spelling, punctuation, and more, as you don't want to submit a poorly-written document.

Not only would a poorly-written case study fail to prove that what you are trying to achieve is important, but it would also increase the chances that your report will be tossed aside and not taken seriously.

3. Don't rush through the process

Writing the perfect case study takes time and patience. Rushing could result in your forgetting to include information that is crucial to your entire study. Don't waste your time creating a study that simply isn't ready. Take the necessary time to perform all the research necessary to write the best case study possible.

Depending on the case study, conducting case study research could mean using qualitative methods, quantitative methods, or both. Qualitative research questions focus on non-numerical data, such as how people feel, their beliefs, their experiences, and so on.

Meanwhile, quantitative research questions focus on numerical or statistical data collection to explain causal links or get an in-depth picture.

It is also important to collect insightful and constructive feedback. This will help you better understand the outcome as well as any changes you need to make to future case studies. Consider using formal and informal ways to collect feedback to ensure that you get a range of opinions and perspectives.

4. Be confident in your theory development

While writing your case study or conducting your formal experimental investigation, you should have confidence in yourself and what you're proposing in your report. If you took the time to gather all the pertinent data collected to complete the report, don't second-guess yourself or doubt your abilities. If you believe your report will be amazing, then it likely will be.

5. Case studies and all qualitative research are long

It's expected that multiple case studies are going to be incredibly boring, and there is no way around this. However, it doesn't mean you can choose your language carefully in order to keep your audience as engaged as possible.

If your audience loses interest in your case study at the beginning, for whatever reason, then this increases the likelihood that your case study will not be funded.

Case study examples

If you want to learn more about how to write a case study, it might be beneficial to take a look at a few case study examples. Below are a few interesting case study examples you may want to take a closer look at.

• Phineas Gage by John Martin Marlow : One of the most famous case studies comes from the medical field, and it is about the story of Phineas Gage, a man who had a railroad spike driven through his head in 1848. As he was working on a railroad, an explosive charge went off prematurely, sending a railroad rod through his head. Even though he survived this incident, he lost his left eye. However, Phineas Gage was studied extensively over the years because his experiences had a significant, lasting impact on his personality. This served as a case study because his injury showed different parts of the brain have different functions.
• Kitty Genovese and the bystander effect : This is a tragic case study that discusses the murder of Kitty Genovese, a woman attacked and murdered in Queens, New York City. Shockingly, while numerous neighbors watched the scene, nobody called for help because they assumed someone else would. This case study helped to define the bystander effect, which is when a person fails to intervene during an emergency because other people are around.
• Henry Molaison and the study of memory : Henry Molaison lost his memory and suffered from debilitating amnesia. He suffered from childhood epilepsy, and medical professionals attempted to remove the part of his brain that was causing his seizures. He had a portion of his brain removed, but it completely took away his ability to hold memories. Even though he went on to live until the age of 82, he was always forced to live in the present moment, as he was completely unable to form new memories.

Case study FAQs

When should you do a case study.

There are several scenarios when conducting a case study can be beneficial. Case studies are often used when there's a "why" or "how" question that needs to be answered. Case studies are also beneficial when trying to understand a complex phenomenon, there's limited research on a topic, or when you're looking for practical solutions to a problem.

How can case study results be used to make business decisions?

You can use the results from a case study to make future business decisions if you find yourself in a similar situation. As you assess the results of a case study, you can identify best practices, evaluate the effectiveness of an intervention, generate new and creative ideas, or get a better understanding of customer needs.

How are case studies different from other research methodologies?

When compared to other research methodologies, such as experimental or qualitative research methodology, a case study does not require a representative sample. For example, if you are performing quantitative research, you have a lot of subjects that expand your sample size. If you are performing experimental research, you may have a random sample in front of you. A case study is usually designed to deliberately focus on unusual situations, which allows it to shed new light on a specific business research problem.

Writing multiple case studies for your business

If you're feeling overwhelmed by the idea of writing a case study and it seems completely foreign, then you aren't alone. Writing a case study for a business is a very big deal, but fortunately, there is help available because an example of a case study doesn't always help.

Mailchimp, a well-known marketing company that provides comprehensive marketing support for all sorts of businesses, can assist you with your case study, or you can review one of their own recently published examples.

Mailchimp can assist you with developing the most effective content strategy to increase your chances of being as successful as possible. Mailchimp's content studio is a great tool that can help your business immensely.

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What Is a Case Study?

Weighing the pros and cons of this method of research

Verywell / Colleen Tighe

• Pros and Cons

What Types of Case Studies Are Out There?

Where do you find data for a case study, how do i write a psychology case study.

A case study is an in-depth study of one person, group, or event. In a case study, nearly every aspect of the subject's life and history is analyzed to seek patterns and causes of behavior. Case studies can be used in many different fields, including psychology, medicine, education, anthropology, political science, and social work.

The point of a case study is to learn as much as possible about an individual or group so that the information can be generalized to many others. Unfortunately, case studies tend to be highly subjective, and it is sometimes difficult to generalize results to a larger population.

While case studies focus on a single individual or group, they follow a format similar to other types of psychology writing. If you are writing a case study, we got you—here are some rules of APA format to reference.  

At a Glance

A case study, or an in-depth study of a person, group, or event, can be a useful research tool when used wisely. In many cases, case studies are best used in situations where it would be difficult or impossible for you to conduct an experiment. They are helpful for looking at unique situations and allow researchers to gather a lot of˜ information about a specific individual or group of people. However, it's important to be cautious of any bias we draw from them as they are highly subjective.

What Are the Benefits and Limitations of Case Studies?

A case study can have its strengths and weaknesses. Researchers must consider these pros and cons before deciding if this type of study is appropriate for their needs.

One of the greatest advantages of a case study is that it allows researchers to investigate things that are often difficult or impossible to replicate in a lab. Some other benefits of a case study:

• Allows researchers to capture information on the 'how,' 'what,' and 'why,' of something that's implemented
• Gives researchers the chance to collect information on why one strategy might be chosen over another
• Permits researchers to develop hypotheses that can be explored in experimental research

On the other hand, a case study can have some drawbacks:

• It cannot necessarily be generalized to the larger population
• Cannot demonstrate cause and effect
• It may not be scientifically rigorous
• It can lead to bias

Researchers may choose to perform a case study if they want to explore a unique or recently discovered phenomenon. Through their insights, researchers develop additional ideas and study questions that might be explored in future studies.

It's important to remember that the insights from case studies cannot be used to determine cause-and-effect relationships between variables. However, case studies may be used to develop hypotheses that can then be addressed in experimental research.

Case Study Examples

There have been a number of notable case studies in the history of psychology. Much of  Freud's work and theories were developed through individual case studies. Some great examples of case studies in psychology include:

• Anna O : Anna O. was a pseudonym of a woman named Bertha Pappenheim, a patient of a physician named Josef Breuer. While she was never a patient of Freud's, Freud and Breuer discussed her case extensively. The woman was experiencing symptoms of a condition that was then known as hysteria and found that talking about her problems helped relieve her symptoms. Her case played an important part in the development of talk therapy as an approach to mental health treatment.
• Phineas Gage : Phineas Gage was a railroad employee who experienced a terrible accident in which an explosion sent a metal rod through his skull, damaging important portions of his brain. Gage recovered from his accident but was left with serious changes in both personality and behavior.
• Genie : Genie was a young girl subjected to horrific abuse and isolation. The case study of Genie allowed researchers to study whether language learning was possible, even after missing critical periods for language development. Her case also served as an example of how scientific research may interfere with treatment and lead to further abuse of vulnerable individuals.

Such cases demonstrate how case research can be used to study things that researchers could not replicate in experimental settings. In Genie's case, her horrific abuse denied her the opportunity to learn a language at critical points in her development.

This is clearly not something researchers could ethically replicate, but conducting a case study on Genie allowed researchers to study phenomena that are otherwise impossible to reproduce.

There are a few different types of case studies that psychologists and other researchers might use:

• Collective case studies : These involve studying a group of individuals. Researchers might study a group of people in a certain setting or look at an entire community. For example, psychologists might explore how access to resources in a community has affected the collective mental well-being of those who live there.
• Descriptive case studies : These involve starting with a descriptive theory. The subjects are then observed, and the information gathered is compared to the pre-existing theory.
• Explanatory case studies : These   are often used to do causal investigations. In other words, researchers are interested in looking at factors that may have caused certain things to occur.
• Exploratory case studies : These are sometimes used as a prelude to further, more in-depth research. This allows researchers to gather more information before developing their research questions and hypotheses .
• Instrumental case studies : These occur when the individual or group allows researchers to understand more than what is initially obvious to observers.
• Intrinsic case studies : This type of case study is when the researcher has a personal interest in the case. Jean Piaget's observations of his own children are good examples of how an intrinsic case study can contribute to the development of a psychological theory.

The three main case study types often used are intrinsic, instrumental, and collective. Intrinsic case studies are useful for learning about unique cases. Instrumental case studies help look at an individual to learn more about a broader issue. A collective case study can be useful for looking at several cases simultaneously.

The type of case study that psychology researchers use depends on the unique characteristics of the situation and the case itself.

There are a number of different sources and methods that researchers can use to gather information about an individual or group. Six major sources that have been identified by researchers are:

• Archival records : Census records, survey records, and name lists are examples of archival records.
• Direct observation : This strategy involves observing the subject, often in a natural setting . While an individual observer is sometimes used, it is more common to utilize a group of observers.
• Documents : Letters, newspaper articles, administrative records, etc., are the types of documents often used as sources.
• Interviews : Interviews are one of the most important methods for gathering information in case studies. An interview can involve structured survey questions or more open-ended questions.
• Participant observation : When the researcher serves as a participant in events and observes the actions and outcomes, it is called participant observation.
• Physical artifacts : Tools, objects, instruments, and other artifacts are often observed during a direct observation of the subject.

If you have been directed to write a case study for a psychology course, be sure to check with your instructor for any specific guidelines you need to follow. If you are writing your case study for a professional publication, check with the publisher for their specific guidelines for submitting a case study.

Here is a general outline of what should be included in a case study.

Section 1: A Case History

This section will have the following structure and content:

Background information : The first section of your paper will present your client's background. Include factors such as age, gender, work, health status, family mental health history, family and social relationships, drug and alcohol history, life difficulties, goals, and coping skills and weaknesses.

Description of the presenting problem : In the next section of your case study, you will describe the problem or symptoms that the client presented with.

Describe any physical, emotional, or sensory symptoms reported by the client. Thoughts, feelings, and perceptions related to the symptoms should also be noted. Any screening or diagnostic assessments that are used should also be described in detail and all scores reported.

Your diagnosis : Provide your diagnosis and give the appropriate Diagnostic and Statistical Manual code. Explain how you reached your diagnosis, how the client's symptoms fit the diagnostic criteria for the disorder(s), or any possible difficulties in reaching a diagnosis.

Section 2: Treatment Plan

This portion of the paper will address the chosen treatment for the condition. This might also include the theoretical basis for the chosen treatment or any other evidence that might exist to support why this approach was chosen.

• Cognitive behavioral approach : Explain how a cognitive behavioral therapist would approach treatment. Offer background information on cognitive behavioral therapy and describe the treatment sessions, client response, and outcome of this type of treatment. Make note of any difficulties or successes encountered by your client during treatment.
• Humanistic approach : Describe a humanistic approach that could be used to treat your client, such as client-centered therapy . Provide information on the type of treatment you chose, the client's reaction to the treatment, and the end result of this approach. Explain why the treatment was successful or unsuccessful.
• Psychoanalytic approach : Describe how a psychoanalytic therapist would view the client's problem. Provide some background on the psychoanalytic approach and cite relevant references. Explain how psychoanalytic therapy would be used to treat the client, how the client would respond to therapy, and the effectiveness of this treatment approach.
• Pharmacological approach : If treatment primarily involves the use of medications, explain which medications were used and why. Provide background on the effectiveness of these medications and how monotherapy may compare with an approach that combines medications with therapy or other treatments.

This section of a case study should also include information about the treatment goals, process, and outcomes.

When you are writing a case study, you should also include a section where you discuss the case study itself, including the strengths and limitiations of the study. You should note how the findings of your case study might support previous research. 

In your discussion section, you should also describe some of the implications of your case study. What ideas or findings might require further exploration? How might researchers go about exploring some of these questions in additional studies?

Need More Tips?

Here are a few additional pointers to keep in mind when formatting your case study:

• Never refer to the subject of your case study as "the client." Instead, use their name or a pseudonym.
• Read examples of case studies to gain an idea about the style and format.
• Remember to use APA format when citing references .

Crowe S, Cresswell K, Robertson A, Huby G, Avery A, Sheikh A. The case study approach .  BMC Med Res Methodol . 2011;11:100.

Crowe S, Cresswell K, Robertson A, Huby G, Avery A, Sheikh A. The case study approach . BMC Med Res Methodol . 2011 Jun 27;11:100. doi:10.1186/1471-2288-11-100

Gagnon, Yves-Chantal.  The Case Study as Research Method: A Practical Handbook . Canada, Chicago Review Press Incorporated DBA Independent Pub Group, 2010.

Yin, Robert K. Case Study Research and Applications: Design and Methods . United States, SAGE Publications, 2017.

By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."

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The 7 Essential Elements of a Great Case Study

March 24, 2023

By Mike Wolfe

Research shows that 93 percent of consumers say online reviews will affect shopping choices . Online reviews certainly help tell a part of your organization’s story, but when you want to offer a bigger picture and really show off what you can do, there’s nothing like a case study. 

A great case study can help assure your audience that you’re more than capable of helping them with their problems because you’ve been there and done that for similar organizations. Ever looked at an organization’s website and checked out their case studies or testimonials before filling out a form or giving them a call?

These are great pieces of collateral that can have an immediate impact on the audience you connect with and can be used in a number of ways throughout the course of your marketing and sales efforts.

When you are looking to put together your next case study (or revamp some of your older ones), take these essential elements into consideration.

1. Common Problem or Challenge

Start with clearly defined issues..

When your audience takes the time to read your case study, they likely do so because they want to see that you resolved a problem or challenge they’re facing. Before writing a case study, consider some common problems or challenges your personas are experiencing and start there. 

2. Explanation of Resolution

Describe the problems, but really showcase your solutions..

Your customer came to you with a problem or need for you to solve—and you knocked it out of the park! Don’t sell yourself short when it comes to describing how you resolved the customer’s problems. Highlight the ways your product or service was the perfect fit for your customer so potential customers can start connecting the dots on how you can help them too.

3. Compelling Story

Tell the story of your customers’ experience..

Problems and solutions are important to cover, but don’t forget to make your case study relatable to your audience. Telling the story from the perspective of the customer and describing how they felt and what they experienced throughout the process helps your audience put themselves in your customer’s shoes. 

4. Customer Quotes

Give your customer a voice..

Take your storytelling to the next level by using real customer quotes that support your case study. The best quotes will draw a clear connection between the customer’s good experience and your product or service, offering an intimate look at how your business helped them succeed. Be sure to choose quotes that perfectly illustrate the results you achieved for your customer, and make sure they accurately reflect the customer’s opinion.

5. Successful Outcome

Let’s see some results.

You’ve got the beginning of the story (why you and the customer met) and the middle of the story (how you worked to help them). Now, in order for this to have a happy ending for both your customers and your audience, you need the results to bring it home.

The key here is to be as specific as possible with your outcomes. Let those results shine and give your audience a glimpse into what they can potentially see from partnering with your organization.

6. Visual Aids

Engage readers visually..

Visual aids help bring a tangible element to the case study, making it more memorable and engaging for readers. Case studies that include visual elements such as photos, diagrams, infographics, or videos can often be more persuasive and effective than those that don’t. Visual aids can also help make complex topics more easily understandable, and they often create a stronger emotional connection with potential customers.

7. Descriptive Name

Cap it off with a great title..

When writing a marketing case study, it is important to include an effective title that accurately describes the content. A catchy and well-crafted title can help draw readers in and entice them to learn more about the journey your customer went through. Good titles are concise yet descriptive, so readers can quickly understand what the case study is about and why it is important. 

Ready to Write Your Amazing New Case Study? 

Here are a few quick tips to get you started:

• Interview your customer about their experience. Ask questions that will help you tell the full story from their point of view, such as:
• What was the customer looking to solve when partnering with you?
• What did the customer need that you were able to provide?
• What has their experience been with your product or service?
• Show their results and give a brief overview of how your tools, strategies, and/or recommendations were impactful.
• Use bullet points to emphasize key findings within the story and grab some quotes from your conversation with the customer to highlight.
• Create some calls to action for the sidebars or footers of your related blog content.

Once created, there are many great places to showcase your next case study. Link to it from your sales collateral or event materials (including your booths and product sheets). Have the resources to use video in your customer conversations? Send these videos out through your social channels to help your audience put a face and a voice to the results you can bring them.

One final piece of advice: Look at metrics about how your audience is primarily viewing content, and capitalize on those options for your next great case study. Best of luck!

This post was originally published in May 2016 and has been updated since.

Easily craft compelling customer interviews & provide leads with the information they need to make an informed decision.

Case Study Questions Template

About the author

Mike Wolfe is a Project Strategist at SmartBug Media helping clients find success through inbound marketing. Read more articles by Mike Wolfe .

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Case Study Method | Characteristics, Advantages & Limitations of Case Study Method

Posted by Md. Harun Ar Rashid | Aug 5, 2021 | Research Methodology

Case Study Method

The case study method is a very popular form of qualitative analysis and involves a careful and complete observation of a social unit, be that unit a person, a family, an institution, a cultural group, or even the entire community. It is a method of study in depth rather than breadth. The case study places more emphasis on the full analysis of a limited number of events or conditions and their interrelations. The case study deals with the processes that take place and their interrelationship. Thus, the case study is essentially an intensive investigation of the particular unit under consideration. The object of the case study method is to locate the factors that account for the behavior patterns of the given unit as an integrated totality.

“The case study method is a technique by which individual factor whether it be an institution or just an episode in the life of an individual or a group is analyzed in its relationship to any other in the group.” ( H. Odum )

“A comprehensive study of a social unit be that unit a person, a group, a social institution, a district or a community.” ( Pauline V. Young )

The case study method is a form of qualitative analysis wherein careful and complete observation of an individual or a situation or an institution is done; efforts are made to study each and every aspect of the concerning unit in minute details and then from case data generalizations and inferences are drawn.

Characteristics: The essential characteristics of the case study method are as under:

• The researcher can take one single social unit or more of such units for his study purpose, may even take a situation to study the same comprehensively.
• To obtain enough information for drawing correct inferences.
• To make a complete study of the social unit covering all facets.
• Try to understand the complex factors that are operative within a social unit as an integrated totality.
• The approach happens to be qualitative and not quantitative. Mere quantitative information is not collected. Every possible effort is made to collect information concerning all aspects of life.
• To know the mutual inter-relationship of causal factors.
• The behavior pattern of the concerning unit is studied directly and not by an indirect and abstract approach.
• It results in fruitful hypotheses along with the data which may be helpful in testing them, and thus it enables the generalized knowledge to get richer and richer.

Advantages: There are several advantages of the case study method, some of them are being:

• To understand fully the behavior pattern of the concerned unit.
• Helps to obtain a real and enlightened record of personal experiences.
• This method enables the researcher to trace out the natural history of the social unit and its relationship with the social factors and the forces involved in its surrounding environment.
• It helps in formulating relevant hypotheses along with the data which may be helpful in testing them.
• It facilitates the intensive study of social units that’s why the case study method is being frequently used, particularly in social researches.
• It helps a lot to the researcher in the task of constructing the appropriate questionnaire.
• The researcher can use different methods such as depth interviews, questionnaires, documents, study reports of individuals, and so on.
• It has proved beneficial in determining the nature of units to be studied along with the nature of the universe. So it is known as the “mode of organizing data”.
• It means to well understand the past of a social unit because of its emphasis on historical analysis, also it’s a technique to suggest measures for improvement in the context of the present environment of the concerned social units.
• It represents a real record of personal experiences which very often escape the attention of most of the skilled researchers using other techniques.
• It enhances the experience, analyzing ability, and skills of the researcher.
• It facilitates the drawing of inferences and helps in maintaining the continuity of the research process.

Limitations: Important limitations of the case study method may as well be highlighted.

• Case situations are seldom comparable and as such the information gathered in case studies is often not comparable. Since the subject under the case study tells history in his own words, logical concepts and units of scientific classification have to be read into it or out of it by the investigator.
• Read Bain does not consider the case data as significant scientific data since they do not provide knowledge of the “impersonal, universal, non-ethical, non-practical, repetitive aspects of phenomena.”8 Real information is often not collected because the subjectivity of the researcher does enter in the collection of information in a case study.
• The danger of false generalization is always there in view of the fact that no set rules are followed in the collection of the information and only a few units are studied.
• It consumes more time and requires a lot of expenditure. More time is needed under the case study method since one studies the natural history cycles of social units and that too minutely.
• The case data are often vitiated because the subject, according to reading Bain, may write what he thinks the investigator wants; and the greater the rapport, the more subjective the whole process is.
• The case study method is based on several assumptions which may not be very realistic at times, and as such, the use of case data is always subject to doubt.
• The case study method can be used only in a limited sphere, it is not possible to use it in the case of a big society. Sampling is also not possible under a case study method.
• Response of the investigator is an important limitation of the case study method. He often thinks that he has full knowledge of the unit and can himself answer about it. In case the same is not true, then consequences follow. In fact, this is more the fault of the researcher rather than that of the case method.

Despite the above-stated limitations, we find that case studies are being undertaken in several disciplines, particularly in sociology, as a tool of scientific research in view of the several advantages indicated earlier. Most of the limitations can be removed if researchers are always conscious of these and are well trained in the modern methods of collecting case data and in the scientific techniques of assembling, classifying, and processing the same. Besides, case studies, in modern times, can be conducted in such a manner that the data are amenable to quantification and statistical treatment. Possibly, this is also the reason why case studies are becoming popular day by day.

Reference:  Research Methodology written by C.R. Kothari

Former Student at Rajshahi University

About The Author

Md. Harun Ar Rashid

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Top 40 Most Popular Case Studies of 2021

Two cases about Hertz claimed top spots in 2021's Top 40 Most Popular Case Studies

Two cases on the uses of debt and equity at Hertz claimed top spots in the CRDT’s (Case Research and Development Team) 2021 top 40 review of cases.

Hertz (A) took the top spot. The case details the financial structure of the rental car company through the end of 2019. Hertz (B), which ranked third in CRDT’s list, describes the company’s struggles during the early part of the COVID pandemic and its eventual need to enter Chapter 11 bankruptcy. 

The success of the Hertz cases was unprecedented for the top 40 list. Usually, cases take a number of years to gain popularity, but the Hertz cases claimed top spots in their first year of release. Hertz (A) also became the first ‘cooked’ case to top the annual review, as all of the other winners had been web-based ‘raw’ cases.

Besides introducing students to the complicated financing required to maintain an enormous fleet of cars, the Hertz cases also expanded the diversity of case protagonists. Kathyrn Marinello was the CEO of Hertz during this period and the CFO, Jamere Jackson is black.

Sandwiched between the two Hertz cases, Coffee 2016, a perennial best seller, finished second. “Glory, Glory, Man United!” a case about an English football team’s IPO made a surprise move to number four.  Cases on search fund boards, the future of malls,  Norway’s Sovereign Wealth fund, Prodigy Finance, the Mayo Clinic, and Cadbury rounded out the top ten.

Other year-end data for 2021 showed:

• Online “raw” case usage remained steady as compared to 2020 with over 35K users from 170 countries and all 50 U.S. states interacting with 196 cases.
• Fifty four percent of raw case users came from outside the U.S..
• The Yale School of Management (SOM) case study directory pages received over 160K page views from 177 countries with approximately a third originating in India followed by the U.S. and the Philippines.
• Twenty-six of the cases in the list are raw cases.
• A third of the cases feature a woman protagonist.
• Orders for Yale SOM case studies increased by almost 50% compared to 2020.
• The top 40 cases were supervised by 19 different Yale SOM faculty members, several supervising multiple cases.

CRDT compiled the Top 40 list by combining data from its case store, Google Analytics, and other measures of interest and adoption.

All of this year’s Top 40 cases are available for purchase from the Yale Management Media store .

And the Top 40 cases studies of 2021 are:

1.   Hertz Global Holdings (A): Uses of Debt and Equity

2.   Coffee 2016

3.   Hertz Global Holdings (B): Uses of Debt and Equity 2020

4.   Glory, Glory Man United!

5.   Search Fund Company Boards: How CEOs Can Build Boards to Help Them Thrive

6.   The Future of Malls: Was Decline Inevitable?

7.   Strategy for Norway's Pension Fund Global

8.   Prodigy Finance

9.   Design at Mayo

10. Cadbury

11. City Hospital Emergency Room

13. Volkswagen

14. Marina Bay Sands

15. Shake Shack IPO

16. Mastercard

17. Netflix

18. Ant Financial

19. AXA: Creating the New CR Metrics

20. IBM Corporate Service Corps

21. Business Leadership in South Africa's 1994 Reforms

22. Alternative Meat Industry

23. Children's Premier

24. Khalil Tawil and Umi (A)

25. Palm Oil 2016

26. Teach For All: Designing a Global Network

27. What's Next? Search Fund Entrepreneurs Reflect on Life After Exit

28. Searching for a Search Fund Structure: A Student Takes a Tour of Various Options

30. Project Sammaan

31. Commonfund ESG

32. Polaroid

33. Connecticut Green Bank 2018: After the Raid

34. FieldFresh Foods

35. The Alibaba Group

36. 360 State Street: Real Options

37. Herman Miller

38. AgBiome

39. Nathan Cummings Foundation

40. Toyota 2010

• Case report
• Open access
• Published: 30 April 2015

The importance of good history taking: a case report

• Durga Ghosh 1 &
• Premalatha Karunaratne 2  

Journal of Medical Case Reports volume  9 , Article number:  97 ( 2015 ) Cite this article

39k Accesses

3 Citations

Metrics details

Introduction

Early comprehensive geriatric assessment (CGA) with good history-taking is essential in assessing the older adult.

Case presentation

Our patient, a 75-year-old Caucasian woman, was originally admitted to hospital for investigation of iron deficiency anemia. During admission, she developed pneumonia and new intermittent atrial fibrillation in association with a right-sided weakness, which was felt to be new at the time.

Following this episode, she was treated for a further chest infection and, despite clinical improvement, her inflammatory markers failed to settle satisfactorily.

She was transferred to her local hospital for a period of rehabilitation where further neurological findings made the diagnosis of solely stroke questionable; these findings prompted further history-taking, investigations and input from other disciplines, thereby helping to arrive at a working diagnosis of vasculitic neuropathy.

Conclusions

The case aims to highlight the importance of taking a good history and performing an early comprehensive assessment in the older adult.

Good history-taking, an essential part of a comprehensive assessment in an older adult [ 1 ], helped reveal an underlying debilitating neuropathy.

Our patient, a 75-year-old Caucasian woman, was admitted to hospital for investigation of iron deficiency anemia in June 2013. Her hemoglobin (Hb), hematocrit and mean cell volume (MCV) levels preadmission were 10.1g/dL, 0.33 and 77 fL, respectively.

There was little known about her past medical history aside from type 2 diabetes mellitus (T2DM) requiring insulin, hypertension and chronic obstructive pulmonary disease (COPD). Investigation for iron deficiency anemia confirmed extensive diverticular disease with normal upper gastrointestinal (GI) endoscopy and duodenal biopsy.

During the same admission, she developed a hospital-acquired pneumonia and new intermittent atrial fibrillation.

Coinciding with this period, she developed a new dysphasia and what was perceived to be a ‘new’ right-sided weakness. A computed tomography (CT) brain scan showed no acute change and she was treated as a patient with ischemic stroke, given the clinical findings.

She was treated for a further pneumonia in hospital and also underwent investigations such as a CT pulmonary angiography (CTPA) scan, which ruled out pulmonary embolism but confirmed partial left lung collapse; subsequent bronchoscopy was negative for malignancy. Her inflammatory markers remained elevated with her C-reactive protein (CRP) level approximately 140 and white cell count (WCC) 14 but she remained mentally alert and made clinical improvement. Her repeat chest X-rays were also unchanged. Given the clinical improvement, she was deemed suitable for transfer for stroke rehabilitation to her local hospital in August 2013. Her medications on transfer were: Novomix 30 twice daily (later stopped due to low blood sugar levels); clopidogrel 75 mg; quinine sulphate 200 mg; ranitidine 150 mg twice daily; folic acid 5mg; and digoxin 125mcg.

In the Rehabilitation and Assessment Directorate (RAD), the assumption was that our patient had suffered a stroke causing a right-sided weakness, as per the handover pre-transfer, however, further neurological features were detected on the post-take ward round as listed below: right lower motor neurone seventh nerve weakness; ptosis right greater than left; bilateral wrist drop; bilateral foot drop; generalized reduced tone and reduced power in all four limbs: right arm 3 out of 5, right leg 0 out of 5, left arm 3 to 4 out of 5, and left leg 2 out of 5. No comment was documented regarding sensation.

The chronicity of the neurological features was uncertain at this point as they did not appear to have been previously documented and the immediate reaction was to exclude an acute neurological process. Fortunately, her daughter was present during the ward round that day and a collateral history revealed our patient had ‘possibly’ been like this for 18 months or more. This led to a degree of reassurance with regard to the fact that the neurological findings were unlikely to be acute.

Further discussion with our patient’s son confirmed that her mobility had gradually deteriorated over a two-year period; from his perception, the only novel finding was alteration of our patient’s speech at the time of a presumed ischemic stroke.

Given the account from our patient’s son and daughter, her general practitioner (GP) was also contacted and it was reported that our patient had been referred to various disciplines for poor mobility but had failed to attend her appointments; she had been diagnosed with a Bell’s palsy and third nerve palsy in 2011, which had been attributed to her diabetes. Interestingly, a previous trial of steroids from her GP for presumed arthropathy had resulted in clinical improvement.

Our patient underwent several investigations, included below, as part of the investigative and diagnostic process. In addition, for the complete history, her blood pressure was 104/53 mmHg and heart rate was 57 beats/minute with no documented murmurs.

A magnetic resonance imaging (MRI) brain scan showed atrophy with small vessel disease, high signal at the left corona radiata and adjacent left occipital horn. An MRI cervical spine scan revealed no gross abnormality and a CT scan of her abdomen and pelvis showed extensive diverticular disease only.

Blood investigations

Blood tests showed her Hb level was 85g/dL; WCC was 11.1; platelets were 512, MCV was 89 and her hematinics were normal. Urea and electrolytes test (U&E), liver function test (LFT), and calcium test results were normal. Her albumin level was l0, CRP level was 120 and her baseline HBA1c level was 57mmol/L (normal range 20 to 42mmol/L). Her cholesterol level was unavailable and her blood and urine cultures were negative.

Vasculitic screen

Her antinuclear antibody test (ANA) results were 1/40 and showed a speckled pattern. She had low C3 0.71g/L (0.88 to 1.82g/L) and low C4 0.08g/L (0.16 to 0.45g/L). Her rheumatoid factor was 623, antineutrophil cytoplasmic antibody (cANCA) results were strongly positive and myeloperoxidase / proteinase 3 (MPO/PR3) negative. Her immunoglobulin A (IgA) level was 6.5, erythrocyte sedimentation rate (ESR) 115, and cryoglobulins were negative. Her carcinoembryonic antigen (CEA) and serum angiotensin-converting enzyme (ACE) levels were normal, and CA 125 test result was 70 (0 to 35). Serum electrophoresis showed no paraproteins and her neuroimmunological blood test results were negative.

Invasive investigations

Her lumbar puncture test result was negative.

Neurology unit investigations

Electromyography (EMG) showed severe axonal sensory motor neuropathy.

Multi-specialist input from several disciplines including rheumatology and neurology was also requested.

The neurologist documented the following clinical findings: right ptosis; right facial weakness; generalized weakness right greater than left; profound distal greater than proximal weakness and wasting left greater than right; upper limb greater than lower limb; sensation distally decreased in lower limbs; and areflexia.

The general consensus was that our patient was probably manifesting a peripheral neuropathy secondary to a vasculitis (the type of which was difficult to classify); the neuropathy had been possibly exacerbated by a recent stroke; the stroke may have been part of the vasculitic process itself or could have been related to atrial fibrillation.

It was felt that a nerve biopsy would have little else to contribute to the diagnosis and simultaneously might induce patient distress and was therefore avoided.

Given her history of T2DM, our patient was cautiously commenced on a trial of prednisolone 40mg with azathioprine on 13 September 2013; additional oral antidiabetic therapy on advice of the diabetic team was commenced and gradual step-down of steroid therapy was planned.

Within days of steroid initiation, our patient’s inflammatory markers improved. Her CRP level fell to 36 and her WCC to single figures.

Her right wrist drop showed slight improvement from initial investigations to the point of discharge. There was, however, little neurological and functional improvement otherwise.

Our patient remained bedbound and her hospital stay was complicated by a pressure ulcer, which had completely healed prior to discharge to a care home six months later. On discharge her blood test results revealed Hb of 94, WCC of 11.5, her platelets were 380 and MCV 90.8, her CRP level was 20 and albumin level was 28. She remained clinically stable and her treatment goal was to help prevent any further neurological deterioration.

Our patient had been admitted for investigation of iron deficiency anemia and suffered recurrent illness during admission precipitating a prolonged hospital admission and eventual transfer to her local hospital for stroke rehabilitation.

Looking back at the case, our patient did have a stroke as was confirmed on MRI; however, the fact that she had bilateral and long-standing neurological signs evaded detection for a considerable period of time.

It is only after a thorough history-taking, examination and comprehensive geriatric assessment post transfer to the rehabilitation unit that her illness was diagnosed. Though there may not have been a great change to her overall quality of life, an underlying debilitating diagnosis was established with a treatment goal attempting to prevent further neurological deterioration.

It can be argued that had a comprehensive geriatric assessment taken place earlier, keeping in mind that she had displayed neurological symptoms some 18 months previously, would earlier initiation of treatment been more effective in improving her quality of life? Should the fact that she had failed to attend appointments prompted further thinking as to the underlying factor causing nonattendance at clinic appointments, keeping in mind that there was a history of neurological signs?

The case aims to highlight the importance of taking a good history and performing a comprehensive assessment, especially in the older adult [ 1 ].

Written informed consent was obtained from the patient’s daughter for publication of clinical details and this case report. The patient verbally consented to publication of the case report but was unable to sign the document due to her wrist drop. A copy of the written consent is available for review by the Editor-in-Chief of this journal.

Abbreviations

angiotensin-converting enzyme

antinuclear antibody

antineutrophil cytoplasmic antibody

carcinoembryonic antigen

chronic obstructive airways disease

C- reactive protein

computed tomography

CT pulmonary angiogram

electromyography

erythrocyte sedimentation rate

gastrointestinal

general practitioner

immunoglobulin A

liver function test

mean cell volume

myeloperoxidase/proteinase 3

magnetic resonance imaging

Rehabilitation and Assessment Directorate

type 2 diabetes mellitus

urea and electrolytes test

white cell count

Martin F. Comprehensive assessment of the frail older patient. British Geriatrics Society. http://www.bgs.org.uk . Accessed November 2014.

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Acknowledgements

A special thank you to Dr Medhat Zaida, Dr Martin Perry, Dr Tracy Baird, Dr Neil McGowan for providing their valuable input and support in the diagnosis and management of this case. A big thanks to Dr Iain Keith, Dr Christopher Foster and also to Dr Gautamananda Ray for providing their valuable opinion when the manuscript was being drafted and a special thanks to all the other medical, nursing and allied health professionals involved in our patient’s care.

Author information

Authors and affiliations.

Acute Medicine Registrar, Dumfries and Galloway Royal Infirmary, Bankend Road, Dumfries, DG1 4AP, UK

Durga Ghosh

Vale of Leven District General Hospital, Main Street, Alexandria, G83 0UA, UK

Premalatha Karunaratne

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Corresponding author

Correspondence to Durga Ghosh .

Additional information

Competing interests.

The authors declare that they have no competing interests.

Authors’ contributions

DG was the locum registrar involved with management of the patient, initiating and carrying out investigations during admission, making specialist referrals, liaising with other specialities, acquiring data, drafting and designing the manuscript. PK was the consultant under whom our patient’s care was allocated. PK was also involved in initiating investigations during admission, liaising with other specialities, acquiring data, drafting and designing the manuscript. Both authors read and approved the final manuscript.

Authors’ information

Dr Durga Ghosh, ST4 Acute Medicine, Dumfries and Galloway Royal Infirmary, Dumfries Dr Premalatha Karunaratne, Consultant Physician Medicine for the Elderly, Vale of Leven District General Hospital, Alexandria and Royal Alexandra Hospital, Paisley.

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Ghosh, D., Karunaratne, P. The importance of good history taking: a case report. J Med Case Reports 9 , 97 (2015). https://doi.org/10.1186/s13256-015-0559-y

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Received : 21 January 2015

Accepted : 02 March 2015

Published : 30 April 2015

DOI : https://doi.org/10.1186/s13256-015-0559-y

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• Older adult
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