how to pick a topic for a literature review

How do I Write a Literature Review?: Step #1: Choosing a Topic

• Step #1: Choosing a Topic
• Step #2: Finding Information
• Step #3: Evaluating Content
• Step #4: Synthesizing Content
• #5 Writing the Review
• Citing Your Sources

CHOOSING A TOPIC

Choosing your research topic is an important step in writing a literature review.

First, choose a strong topic and one you're interested in. You don't want a topic that is too narrow or one that has little or no research about it. Think of a topic that will have enough supporting articles relating to it. Is it significant enough that research has been done on it?

Try brainstorming . Writing different ideas down on paper can help your ideas flow. You also want a topic that piques your curiosity. Keep in mind you have to live with this topic over the course of an entire semester.

Try identifying 3 potential research topics. Consider related concepts. Then, perform a brief preliminary search on all three. From your three ideas, choose the one that is strongest. Are there enough articles available? Is the topic too general? Keep refining your topic so that it isn't too broad and general.

Finally, write down your topic in a statement form .

Here are a few helpful tips on how to choose a research topic:

• Choose a strong topic & one that interests you
• Try a preliminary search on your topic
• Refine your topic
• Write it out as a statement

Identifying the Scope of Your Lit. Review

In the early phase of planning your literature review, you will want to identify the scope of your research. Below are a few elements to consider:

• How long will the literature review be?
• How many sources/citations are required?
• Will the literature under review have a publication date requirement? (For example, you will only include sources published between 1990 and 2010.)
• What type of resources will you consult? (e.g. trade journals, peer review journals, books, websites, etc.)
• Will your literature review focus on a theoretical issue, on a topical issue, or on qualitative/quantitative research?
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• How to Write a Literature Review | Guide, Examples, & Templates

How to Write a Literature Review | Guide, Examples, & Templates

Published on January 2, 2023 by Shona McCombes . Revised on September 11, 2023.

What is a literature review? A literature review is a survey of scholarly sources on a specific topic. It provides an overview of current knowledge, allowing you to identify relevant theories, methods, and gaps in the existing research that you can later apply to your paper, thesis, or dissertation topic .

There are five key steps to writing a literature review:

• Search for relevant literature
• Evaluate sources
• Identify themes, debates, and gaps
• Outline the structure
• Write your literature review

A good literature review doesn’t just summarize sources—it analyzes, synthesizes , and critically evaluates to give a clear picture of the state of knowledge on the subject.

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Table of contents

What is the purpose of a literature review, examples of literature reviews, step 1 – search for relevant literature, step 2 – evaluate and select sources, step 3 – identify themes, debates, and gaps, step 4 – outline your literature review’s structure, step 5 – write your literature review, free lecture slides, other interesting articles, frequently asked questions, introduction.

• Quick Run-through
• Step 1 & 2

When you write a thesis , dissertation , or research paper , you will likely have to conduct a literature review to situate your research within existing knowledge. The literature review gives you a chance to:

• Demonstrate your familiarity with the topic and its scholarly context
• Develop a theoretical framework and methodology for your research
• Position your work in relation to other researchers and theorists
• Show how your research addresses a gap or contributes to a debate
• Evaluate the current state of research and demonstrate your knowledge of the scholarly debates around your topic.

Writing literature reviews is a particularly important skill if you want to apply for graduate school or pursue a career in research. We’ve written a step-by-step guide that you can follow below.

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Writing literature reviews can be quite challenging! A good starting point could be to look at some examples, depending on what kind of literature review you’d like to write.

• Example literature review #1: “Why Do People Migrate? A Review of the Theoretical Literature” ( Theoretical literature review about the development of economic migration theory from the 1950s to today.)
• Example literature review #2: “Literature review as a research methodology: An overview and guidelines” ( Methodological literature review about interdisciplinary knowledge acquisition and production.)
• Example literature review #3: “The Use of Technology in English Language Learning: A Literature Review” ( Thematic literature review about the effects of technology on language acquisition.)
• Example literature review #4: “Learners’ Listening Comprehension Difficulties in English Language Learning: A Literature Review” ( Chronological literature review about how the concept of listening skills has changed over time.)

You can also check out our templates with literature review examples and sample outlines at the links below.

Download Word doc Download Google doc

Before you begin searching for literature, you need a clearly defined topic .

If you are writing the literature review section of a dissertation or research paper, you will search for literature related to your research problem and questions .

Make a list of keywords

Start by creating a list of keywords related to your research question. Include each of the key concepts or variables you’re interested in, and list any synonyms and related terms. You can add to this list as you discover new keywords in the process of your literature search.

• Social media, Facebook, Instagram, Twitter, Snapchat, TikTok
• Body image, self-perception, self-esteem, mental health
• Generation Z, teenagers, adolescents, youth

Search for relevant sources

Use your keywords to begin searching for sources. Some useful databases to search for journals and articles include:

• Your university’s library catalogue
• Google Scholar
• Project Muse (humanities and social sciences)
• Medline (life sciences and biomedicine)
• EconLit (economics)
• Inspec (physics, engineering and computer science)

You can also use boolean operators to help narrow down your search.

Make sure to read the abstract to find out whether an article is relevant to your question. When you find a useful book or article, you can check the bibliography to find other relevant sources.

You likely won’t be able to read absolutely everything that has been written on your topic, so it will be necessary to evaluate which sources are most relevant to your research question.

For each publication, ask yourself:

• What question or problem is the author addressing?
• What are the key concepts and how are they defined?
• What are the key theories, models, and methods?
• Does the research use established frameworks or take an innovative approach?
• What are the results and conclusions of the study?
• How does the publication relate to other literature in the field? Does it confirm, add to, or challenge established knowledge?
• What are the strengths and weaknesses of the research?

Make sure the sources you use are credible , and make sure you read any landmark studies and major theories in your field of research.

You can use our template to summarize and evaluate sources you’re thinking about using. Click on either button below to download.

Take notes and cite your sources

As you read, you should also begin the writing process. Take notes that you can later incorporate into the text of your literature review.

It is important to keep track of your sources with citations to avoid plagiarism . It can be helpful to make an annotated bibliography , where you compile full citation information and write a paragraph of summary and analysis for each source. This helps you remember what you read and saves time later in the process.

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To begin organizing your literature review’s argument and structure, be sure you understand the connections and relationships between the sources you’ve read. Based on your reading and notes, you can look for:

• Trends and patterns (in theory, method or results): do certain approaches become more or less popular over time?
• Themes: what questions or concepts recur across the literature?
• Debates, conflicts and contradictions: where do sources disagree?
• Pivotal publications: are there any influential theories or studies that changed the direction of the field?
• Gaps: what is missing from the literature? Are there weaknesses that need to be addressed?

This step will help you work out the structure of your literature review and (if applicable) show how your own research will contribute to existing knowledge.

• Most research has focused on young women.
• There is an increasing interest in the visual aspects of social media.
• But there is still a lack of robust research on highly visual platforms like Instagram and Snapchat—this is a gap that you could address in your own research.

There are various approaches to organizing the body of a literature review. Depending on the length of your literature review, you can combine several of these strategies (for example, your overall structure might be thematic, but each theme is discussed chronologically).

Chronological

The simplest approach is to trace the development of the topic over time. However, if you choose this strategy, be careful to avoid simply listing and summarizing sources in order.

Try to analyze patterns, turning points and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred.

If you have found some recurring central themes, you can organize your literature review into subsections that address different aspects of the topic.

For example, if you are reviewing literature about inequalities in migrant health outcomes, key themes might include healthcare policy, language barriers, cultural attitudes, legal status, and economic access.

Methodological

If you draw your sources from different disciplines or fields that use a variety of research methods , you might want to compare the results and conclusions that emerge from different approaches. For example:

• Look at what results have emerged in qualitative versus quantitative research
• Discuss how the topic has been approached by empirical versus theoretical scholarship
• Divide the literature into sociological, historical, and cultural sources

Theoretical

A literature review is often the foundation for a theoretical framework . You can use it to discuss various theories, models, and definitions of key concepts.

You might argue for the relevance of a specific theoretical approach, or combine various theoretical concepts to create a framework for your research.

Like any other academic text , your literature review should have an introduction , a main body, and a conclusion . What you include in each depends on the objective of your literature review.

The introduction should clearly establish the focus and purpose of the literature review.

Depending on the length of your literature review, you might want to divide the body into subsections. You can use a subheading for each theme, time period, or methodological approach.

As you write, you can follow these tips:

• Summarize and synthesize: give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: don’t just paraphrase other researchers — add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
• Critically evaluate: mention the strengths and weaknesses of your sources
• Write in well-structured paragraphs: use transition words and topic sentences to draw connections, comparisons and contrasts

In the conclusion, you should summarize the key findings you have taken from the literature and emphasize their significance.

When you’ve finished writing and revising your literature review, don’t forget to proofread thoroughly before submitting. Not a language expert? Check out Scribbr’s professional proofreading services !

This article has been adapted into lecture slides that you can use to teach your students about writing a literature review.

Scribbr slides are free to use, customize, and distribute for educational purposes.

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

• Sampling methods
• Simple random sampling
• Stratified sampling
• Cluster sampling
• Likert scales
• Reproducibility

 Statistics

• Null hypothesis
• Statistical power
• Probability distribution
• Effect size
• Poisson distribution

Research bias

• Optimism bias
• Cognitive bias
• Implicit bias
• Hawthorne effect
• Anchoring bias
• Explicit bias

A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a thesis, dissertation , or research paper , in order to situate your work in relation to existing knowledge.

There are several reasons to conduct a literature review at the beginning of a research project:

• To familiarize yourself with the current state of knowledge on your topic
• To ensure that you’re not just repeating what others have already done
• To identify gaps in knowledge and unresolved problems that your research can address
• To develop your theoretical framework and methodology
• To provide an overview of the key findings and debates on the topic

Writing the literature review shows your reader how your work relates to existing research and what new insights it will contribute.

The literature review usually comes near the beginning of your thesis or dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

A literature review is a survey of credible sources on a topic, often used in dissertations , theses, and research papers . Literature reviews give an overview of knowledge on a subject, helping you identify relevant theories and methods, as well as gaps in existing research. Literature reviews are set up similarly to other  academic texts , with an introduction , a main body, and a conclusion .

An  annotated bibliography is a list of  source references that has a short description (called an annotation ) for each of the sources. It is often assigned as part of the research process for a  paper .  

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McCombes, S. (2023, September 11). How to Write a Literature Review | Guide, Examples, & Templates. Scribbr. Retrieved September 23, 2024, from https://www.scribbr.com/dissertation/literature-review/

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Ten Simple Rules for Writing a Literature Review

Marco pautasso.

1 Centre for Functional and Evolutionary Ecology (CEFE), CNRS, Montpellier, France

2 Centre for Biodiversity Synthesis and Analysis (CESAB), FRB, Aix-en-Provence, France

Literature reviews are in great demand in most scientific fields. Their need stems from the ever-increasing output of scientific publications [1] . For example, compared to 1991, in 2008 three, eight, and forty times more papers were indexed in Web of Science on malaria, obesity, and biodiversity, respectively [2] . Given such mountains of papers, scientists cannot be expected to examine in detail every single new paper relevant to their interests [3] . Thus, it is both advantageous and necessary to rely on regular summaries of the recent literature. Although recognition for scientists mainly comes from primary research, timely literature reviews can lead to new synthetic insights and are often widely read [4] . For such summaries to be useful, however, they need to be compiled in a professional way [5] .

When starting from scratch, reviewing the literature can require a titanic amount of work. That is why researchers who have spent their career working on a certain research issue are in a perfect position to review that literature. Some graduate schools are now offering courses in reviewing the literature, given that most research students start their project by producing an overview of what has already been done on their research issue [6] . However, it is likely that most scientists have not thought in detail about how to approach and carry out a literature review.

Reviewing the literature requires the ability to juggle multiple tasks, from finding and evaluating relevant material to synthesising information from various sources, from critical thinking to paraphrasing, evaluating, and citation skills [7] . In this contribution, I share ten simple rules I learned working on about 25 literature reviews as a PhD and postdoctoral student. Ideas and insights also come from discussions with coauthors and colleagues, as well as feedback from reviewers and editors.

Rule 1: Define a Topic and Audience

How to choose which topic to review? There are so many issues in contemporary science that you could spend a lifetime of attending conferences and reading the literature just pondering what to review. On the one hand, if you take several years to choose, several other people may have had the same idea in the meantime. On the other hand, only a well-considered topic is likely to lead to a brilliant literature review [8] . The topic must at least be:

• interesting to you (ideally, you should have come across a series of recent papers related to your line of work that call for a critical summary),
• an important aspect of the field (so that many readers will be interested in the review and there will be enough material to write it), and
• a well-defined issue (otherwise you could potentially include thousands of publications, which would make the review unhelpful).

Ideas for potential reviews may come from papers providing lists of key research questions to be answered [9] , but also from serendipitous moments during desultory reading and discussions. In addition to choosing your topic, you should also select a target audience. In many cases, the topic (e.g., web services in computational biology) will automatically define an audience (e.g., computational biologists), but that same topic may also be of interest to neighbouring fields (e.g., computer science, biology, etc.).

Rule 2: Search and Re-search the Literature

After having chosen your topic and audience, start by checking the literature and downloading relevant papers. Five pieces of advice here:

• keep track of the search items you use (so that your search can be replicated [10] ),
• keep a list of papers whose pdfs you cannot access immediately (so as to retrieve them later with alternative strategies),
• use a paper management system (e.g., Mendeley, Papers, Qiqqa, Sente),
• define early in the process some criteria for exclusion of irrelevant papers (these criteria can then be described in the review to help define its scope), and
• do not just look for research papers in the area you wish to review, but also seek previous reviews.

The chances are high that someone will already have published a literature review ( Figure 1 ), if not exactly on the issue you are planning to tackle, at least on a related topic. If there are already a few or several reviews of the literature on your issue, my advice is not to give up, but to carry on with your own literature review,

The bottom-right situation (many literature reviews but few research papers) is not just a theoretical situation; it applies, for example, to the study of the impacts of climate change on plant diseases, where there appear to be more literature reviews than research studies [33] .

• discussing in your review the approaches, limitations, and conclusions of past reviews,
• trying to find a new angle that has not been covered adequately in the previous reviews, and
• incorporating new material that has inevitably accumulated since their appearance.

When searching the literature for pertinent papers and reviews, the usual rules apply:

• be thorough,
• use different keywords and database sources (e.g., DBLP, Google Scholar, ISI Proceedings, JSTOR Search, Medline, Scopus, Web of Science), and
• look at who has cited past relevant papers and book chapters.

Rule 3: Take Notes While Reading

If you read the papers first, and only afterwards start writing the review, you will need a very good memory to remember who wrote what, and what your impressions and associations were while reading each single paper. My advice is, while reading, to start writing down interesting pieces of information, insights about how to organize the review, and thoughts on what to write. This way, by the time you have read the literature you selected, you will already have a rough draft of the review.

Of course, this draft will still need much rewriting, restructuring, and rethinking to obtain a text with a coherent argument [11] , but you will have avoided the danger posed by staring at a blank document. Be careful when taking notes to use quotation marks if you are provisionally copying verbatim from the literature. It is advisable then to reformulate such quotes with your own words in the final draft. It is important to be careful in noting the references already at this stage, so as to avoid misattributions. Using referencing software from the very beginning of your endeavour will save you time.

Rule 4: Choose the Type of Review You Wish to Write

After having taken notes while reading the literature, you will have a rough idea of the amount of material available for the review. This is probably a good time to decide whether to go for a mini- or a full review. Some journals are now favouring the publication of rather short reviews focusing on the last few years, with a limit on the number of words and citations. A mini-review is not necessarily a minor review: it may well attract more attention from busy readers, although it will inevitably simplify some issues and leave out some relevant material due to space limitations. A full review will have the advantage of more freedom to cover in detail the complexities of a particular scientific development, but may then be left in the pile of the very important papers “to be read” by readers with little time to spare for major monographs.

There is probably a continuum between mini- and full reviews. The same point applies to the dichotomy of descriptive vs. integrative reviews. While descriptive reviews focus on the methodology, findings, and interpretation of each reviewed study, integrative reviews attempt to find common ideas and concepts from the reviewed material [12] . A similar distinction exists between narrative and systematic reviews: while narrative reviews are qualitative, systematic reviews attempt to test a hypothesis based on the published evidence, which is gathered using a predefined protocol to reduce bias [13] , [14] . When systematic reviews analyse quantitative results in a quantitative way, they become meta-analyses. The choice between different review types will have to be made on a case-by-case basis, depending not just on the nature of the material found and the preferences of the target journal(s), but also on the time available to write the review and the number of coauthors [15] .

Rule 5: Keep the Review Focused, but Make It of Broad Interest

Whether your plan is to write a mini- or a full review, it is good advice to keep it focused 16 , 17 . Including material just for the sake of it can easily lead to reviews that are trying to do too many things at once. The need to keep a review focused can be problematic for interdisciplinary reviews, where the aim is to bridge the gap between fields [18] . If you are writing a review on, for example, how epidemiological approaches are used in modelling the spread of ideas, you may be inclined to include material from both parent fields, epidemiology and the study of cultural diffusion. This may be necessary to some extent, but in this case a focused review would only deal in detail with those studies at the interface between epidemiology and the spread of ideas.

While focus is an important feature of a successful review, this requirement has to be balanced with the need to make the review relevant to a broad audience. This square may be circled by discussing the wider implications of the reviewed topic for other disciplines.

Rule 6: Be Critical and Consistent

Reviewing the literature is not stamp collecting. A good review does not just summarize the literature, but discusses it critically, identifies methodological problems, and points out research gaps [19] . After having read a review of the literature, a reader should have a rough idea of:

• the major achievements in the reviewed field,
• the main areas of debate, and
• the outstanding research questions.

It is challenging to achieve a successful review on all these fronts. A solution can be to involve a set of complementary coauthors: some people are excellent at mapping what has been achieved, some others are very good at identifying dark clouds on the horizon, and some have instead a knack at predicting where solutions are going to come from. If your journal club has exactly this sort of team, then you should definitely write a review of the literature! In addition to critical thinking, a literature review needs consistency, for example in the choice of passive vs. active voice and present vs. past tense.

Rule 7: Find a Logical Structure

Like a well-baked cake, a good review has a number of telling features: it is worth the reader's time, timely, systematic, well written, focused, and critical. It also needs a good structure. With reviews, the usual subdivision of research papers into introduction, methods, results, and discussion does not work or is rarely used. However, a general introduction of the context and, toward the end, a recapitulation of the main points covered and take-home messages make sense also in the case of reviews. For systematic reviews, there is a trend towards including information about how the literature was searched (database, keywords, time limits) [20] .

How can you organize the flow of the main body of the review so that the reader will be drawn into and guided through it? It is generally helpful to draw a conceptual scheme of the review, e.g., with mind-mapping techniques. Such diagrams can help recognize a logical way to order and link the various sections of a review [21] . This is the case not just at the writing stage, but also for readers if the diagram is included in the review as a figure. A careful selection of diagrams and figures relevant to the reviewed topic can be very helpful to structure the text too [22] .

Rule 8: Make Use of Feedback

Reviews of the literature are normally peer-reviewed in the same way as research papers, and rightly so [23] . As a rule, incorporating feedback from reviewers greatly helps improve a review draft. Having read the review with a fresh mind, reviewers may spot inaccuracies, inconsistencies, and ambiguities that had not been noticed by the writers due to rereading the typescript too many times. It is however advisable to reread the draft one more time before submission, as a last-minute correction of typos, leaps, and muddled sentences may enable the reviewers to focus on providing advice on the content rather than the form.

Feedback is vital to writing a good review, and should be sought from a variety of colleagues, so as to obtain a diversity of views on the draft. This may lead in some cases to conflicting views on the merits of the paper, and on how to improve it, but such a situation is better than the absence of feedback. A diversity of feedback perspectives on a literature review can help identify where the consensus view stands in the landscape of the current scientific understanding of an issue [24] .

Rule 9: Include Your Own Relevant Research, but Be Objective

In many cases, reviewers of the literature will have published studies relevant to the review they are writing. This could create a conflict of interest: how can reviewers report objectively on their own work [25] ? Some scientists may be overly enthusiastic about what they have published, and thus risk giving too much importance to their own findings in the review. However, bias could also occur in the other direction: some scientists may be unduly dismissive of their own achievements, so that they will tend to downplay their contribution (if any) to a field when reviewing it.

In general, a review of the literature should neither be a public relations brochure nor an exercise in competitive self-denial. If a reviewer is up to the job of producing a well-organized and methodical review, which flows well and provides a service to the readership, then it should be possible to be objective in reviewing one's own relevant findings. In reviews written by multiple authors, this may be achieved by assigning the review of the results of a coauthor to different coauthors.

Rule 10: Be Up-to-Date, but Do Not Forget Older Studies

Given the progressive acceleration in the publication of scientific papers, today's reviews of the literature need awareness not just of the overall direction and achievements of a field of inquiry, but also of the latest studies, so as not to become out-of-date before they have been published. Ideally, a literature review should not identify as a major research gap an issue that has just been addressed in a series of papers in press (the same applies, of course, to older, overlooked studies (“sleeping beauties” [26] )). This implies that literature reviewers would do well to keep an eye on electronic lists of papers in press, given that it can take months before these appear in scientific databases. Some reviews declare that they have scanned the literature up to a certain point in time, but given that peer review can be a rather lengthy process, a full search for newly appeared literature at the revision stage may be worthwhile. Assessing the contribution of papers that have just appeared is particularly challenging, because there is little perspective with which to gauge their significance and impact on further research and society.

Inevitably, new papers on the reviewed topic (including independently written literature reviews) will appear from all quarters after the review has been published, so that there may soon be the need for an updated review. But this is the nature of science [27] – [32] . I wish everybody good luck with writing a review of the literature.

Acknowledgments

Many thanks to M. Barbosa, K. Dehnen-Schmutz, T. Döring, D. Fontaneto, M. Garbelotto, O. Holdenrieder, M. Jeger, D. Lonsdale, A. MacLeod, P. Mills, M. Moslonka-Lefebvre, G. Stancanelli, P. Weisberg, and X. Xu for insights and discussions, and to P. Bourne, T. Matoni, and D. Smith for helpful comments on a previous draft.

Funding Statement

This work was funded by the French Foundation for Research on Biodiversity (FRB) through its Centre for Synthesis and Analysis of Biodiversity data (CESAB), as part of the NETSEED research project. The funders had no role in the preparation of the manuscript.

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Writing a Literature Review

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A literature review is a document or section of a document that collects key sources on a topic and discusses those sources in conversation with each other (also called synthesis ). The lit review is an important genre in many disciplines, not just literature (i.e., the study of works of literature such as novels and plays). When we say “literature review” or refer to “the literature,” we are talking about the research ( scholarship ) in a given field. You will often see the terms “the research,” “the scholarship,” and “the literature” used mostly interchangeably.

Where, when, and why would I write a lit review?

There are a number of different situations where you might write a literature review, each with slightly different expectations; different disciplines, too, have field-specific expectations for what a literature review is and does. For instance, in the humanities, authors might include more overt argumentation and interpretation of source material in their literature reviews, whereas in the sciences, authors are more likely to report study designs and results in their literature reviews; these differences reflect these disciplines’ purposes and conventions in scholarship. You should always look at examples from your own discipline and talk to professors or mentors in your field to be sure you understand your discipline’s conventions, for literature reviews as well as for any other genre.

A literature review can be a part of a research paper or scholarly article, usually falling after the introduction and before the research methods sections. In these cases, the lit review just needs to cover scholarship that is important to the issue you are writing about; sometimes it will also cover key sources that informed your research methodology.

Lit reviews can also be standalone pieces, either as assignments in a class or as publications. In a class, a lit review may be assigned to help students familiarize themselves with a topic and with scholarship in their field, get an idea of the other researchers working on the topic they’re interested in, find gaps in existing research in order to propose new projects, and/or develop a theoretical framework and methodology for later research. As a publication, a lit review usually is meant to help make other scholars’ lives easier by collecting and summarizing, synthesizing, and analyzing existing research on a topic. This can be especially helpful for students or scholars getting into a new research area, or for directing an entire community of scholars toward questions that have not yet been answered.

What are the parts of a lit review?

Most lit reviews use a basic introduction-body-conclusion structure; if your lit review is part of a larger paper, the introduction and conclusion pieces may be just a few sentences while you focus most of your attention on the body. If your lit review is a standalone piece, the introduction and conclusion take up more space and give you a place to discuss your goals, research methods, and conclusions separately from where you discuss the literature itself.

Introduction:

• An introductory paragraph that explains what your working topic and thesis is
• A forecast of key topics or texts that will appear in the review
• Potentially, a description of how you found sources and how you analyzed them for inclusion and discussion in the review (more often found in published, standalone literature reviews than in lit review sections in an article or research paper)
• Summarize and synthesize: Give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: Don’t just paraphrase other researchers – add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
• Critically Evaluate: Mention the strengths and weaknesses of your sources
• Write in well-structured paragraphs: Use transition words and topic sentence to draw connections, comparisons, and contrasts.

Conclusion:

• Summarize the key findings you have taken from the literature and emphasize their significance
• Connect it back to your primary research question

How should I organize my lit review?

Lit reviews can take many different organizational patterns depending on what you are trying to accomplish with the review. Here are some examples:

• Chronological : The simplest approach is to trace the development of the topic over time, which helps familiarize the audience with the topic (for instance if you are introducing something that is not commonly known in your field). If you choose this strategy, be careful to avoid simply listing and summarizing sources in order. Try to analyze the patterns, turning points, and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred (as mentioned previously, this may not be appropriate in your discipline — check with a teacher or mentor if you’re unsure).
• Thematic : If you have found some recurring central themes that you will continue working with throughout your piece, you can organize your literature review into subsections that address different aspects of the topic. For example, if you are reviewing literature about women and religion, key themes can include the role of women in churches and the religious attitude towards women.
• Qualitative versus quantitative research
• Empirical versus theoretical scholarship
• Divide the research by sociological, historical, or cultural sources
• Theoretical : In many humanities articles, the literature review is the foundation for the theoretical framework. You can use it to discuss various theories, models, and definitions of key concepts. You can argue for the relevance of a specific theoretical approach or combine various theorical concepts to create a framework for your research.

What are some strategies or tips I can use while writing my lit review?

Any lit review is only as good as the research it discusses; make sure your sources are well-chosen and your research is thorough. Don’t be afraid to do more research if you discover a new thread as you’re writing. More info on the research process is available in our "Conducting Research" resources .

As you’re doing your research, create an annotated bibliography ( see our page on the this type of document ). Much of the information used in an annotated bibliography can be used also in a literature review, so you’ll be not only partially drafting your lit review as you research, but also developing your sense of the larger conversation going on among scholars, professionals, and any other stakeholders in your topic.

Usually you will need to synthesize research rather than just summarizing it. This means drawing connections between sources to create a picture of the scholarly conversation on a topic over time. Many student writers struggle to synthesize because they feel they don’t have anything to add to the scholars they are citing; here are some strategies to help you:

• It often helps to remember that the point of these kinds of syntheses is to show your readers how you understand your research, to help them read the rest of your paper.
• Writing teachers often say synthesis is like hosting a dinner party: imagine all your sources are together in a room, discussing your topic. What are they saying to each other?
• Look at the in-text citations in each paragraph. Are you citing just one source for each paragraph? This usually indicates summary only. When you have multiple sources cited in a paragraph, you are more likely to be synthesizing them (not always, but often
• Read more about synthesis here.

The most interesting literature reviews are often written as arguments (again, as mentioned at the beginning of the page, this is discipline-specific and doesn’t work for all situations). Often, the literature review is where you can establish your research as filling a particular gap or as relevant in a particular way. You have some chance to do this in your introduction in an article, but the literature review section gives a more extended opportunity to establish the conversation in the way you would like your readers to see it. You can choose the intellectual lineage you would like to be part of and whose definitions matter most to your thinking (mostly humanities-specific, but this goes for sciences as well). In addressing these points, you argue for your place in the conversation, which tends to make the lit review more compelling than a simple reporting of other sources.

Writing a Literature Review

• What is a Literature Review?
• Step 1: Choosing a Topic
• Step 2: Finding Information
• Step 3: Evaluating Content
• Step 4: Taking Notes
• Step 5: Synthesizing Content
• Step 6: Writing the Review
• Step 7: Citing Your Sources
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Choosing a Topic

Choosing your research topic is an important step in writing a literature review. First, choose a strong topic and one you're interested in. You don't want a topic that is too narrow or one that has little or no research about it. Think of a topic that will have enough supporting articles relating to it. Is it significant enough that research has been done on it?

Try brainstorming. Writing different ideas down on paper can help your ideas flow. You also want a topic that piques your curiosity. Keep in mind you have to live with this topic over the course of a entire semester.

Try identifying 3 potential research topics. Consider related concepts. Then, perform a brief preliminary search on all three. From your three ideas, choose the one that is strongest. Are there enough articles available? Is the topic too general? Keep refining your topic so that it isn't too broad and general.

Finally, write down your topic in a statement form.

Identifying the Scope of Your Lit. Review

In the early phase of planning your literature review, you will want to identify the scope of your research. Below are a few elements to consider:

• How long will the literature review be?
• How many sources/citations are required?
• Will the literature under review have a publication date requirement? (For example, you will only include sources published between 1990 and 2010.)
• What type of resources will you consult? (e.g. trade journals, peer review journals, books, websites, etc.)
• Will your literature review focus on a theoretical issue, on a topical issue, or on qualitative/quantitative research?
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• Library Guides
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• Getting Started

Literature Reviews: Getting Started

What is a literature review.

A literature review is an overview of the available research for a specific scholarly topic. Literature reviews summarize existing research to answer a review question, provide context for new research, or identify important gaps in the existing body of literature.

An incredible amount of academic literature is published each year; by some estimates nearly three million articles .

Sorting through and reviewing that literature can be complicated, so this Research Guide provides a structured approach to make the process more manageable.

THIS GUIDE IS AN OVERVIEW OF THE LITERATURE REVIEW PROCESS:

• Getting Started (asking a research question | defining scope)
• Choosing a Type of Review
• Searching the Literature
• Organizing the Literature
• Writing the Literature Review (analyzing | synthesizing)

A  literature search  is a systematic search of the scholarly sources in a particular discipline. A  literature review   is the analysis, critical evaluation and synthesis of the results of that search. During this process you will move from a review  of  the literature to a review  for   your research.   Your synthesis of the literature is your unique contribution to research.

WHO IS THIS RESEARCH GUIDE FOR?

— those new to reviewing the literature

— those that need a refresher or a deeper understanding of writing literature reviews

You may need to do a literature review as a part of a course assignment, a capstone project, a master's thesis, a dissertation, or as part of a journal article. No matter the context, a literature review is an essential part of the research process. 

Literature Review Process

Purpose of a Literature Review

What is the purpose of a literature review.

A literature review is typically performed for a specific reason. Even when assigned as an assignment, the goal of the literature review will be one or more of the following:

• To communicate a project's novelty by identifying a research gap

• An overview of research issues , methodologies or results relevant to field
• To explore the  volume and types of available studies
• To establish familiarity with current research before carrying out a new project
• To resolve conflicts amongst contradictory previous studies

Reviewing the literature helps you understand a research topic and develop your own perspective.

A LITERATURE REVIEW IS NOT :

• An annotated bibliography – which is a list of annotated citations to books, articles and documents that includes a brief description and evaluation for each entry
• A literary review – which is a critical discussion of the merits and weaknesses of a literary work
• A book review – which is a critical discussion of the merits and weaknesses of a particular book

Attribution

Thanks to Librarian Jamie Niehof at the University of Michigan for providing permission to reuse and remix this Literature Reviews guide.

Workshop Materials

• Materials from OSU Literature Review Workshop
• Last Updated: Sep 23, 2024 11:11 AM
• URL: https://info.library.okstate.edu/literaturereviews

Literature Review

Picking a topic and keywords to research your topic, concept mapping, picking a topic and search terms.

• Strategies to Find Sources
• Evaluating Literature Reviews and Sources
• Tips for Writing Literature Reviews
• Writing Literature Review: Useful Sites
• Citation Resources
• Other Academic Writings

Whether you are writing a literature review as a standalone work or as part of a paper, choosing a topic is an important part of the process. If you haven't selected a topic yet for your literature view or you feel that your topic is too broad, this page is for you!

The key to successfully choosing a topic is to find one that is not too broad (impossible to cover adequately) but also not too narrow (not enough has been written about it). Use the tools below to help you brainstorm a topic and keywords that you can then use to search our many databases. Feel free to explore these different options or contact a Subject Specialist if you need more help!

Concept mapping,  a way to visualize the possible dimensions of a topic, is a helpful tool to narrow down a very broad topic. The video below can help you develop keywords that you can use when searching for articles and books in databases.

Below are some useful links and handouts that help you develop your topic. They are useful for helping you develop keywords/search terms or learning the best way to search databases to find articles and books for your research.

• UVA Thinking Tool: Choosing a Topic and Search Terms  Provides a template for focusing a research assignment through the brainstorming of ideas, keywords, and other terminology related to a topic.
• UW How to Improve Database Search Results  Suggested strategies for retrieving relevant search results.
• UCLA: Narrowing a Topic  Useful tips on how to narrow a topic when you are getting too many results in your search. From the librarians at UCLA.
• UCLA: Broadering a Topic Useful tips on how to broaden your topic when you are getting few results in your search. From the librarians at UCLA.
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• Updated: Sep 12, 2024 2:29 PM
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Literature Reviews

• Defining Literature Reviews
• Choosing a Topic
• Developing Search Strategies
• Finding Sources
• Evaluating Sources
• Staying Organized
• Tracking Citations
• Writing the Literature Review

Getting Acquainted with the Literature and Identifying Gaps

In addition to the suggestions on this page, you can narrow down your research question by getting a better understanding of the literature in your field and what gaps exist in the research.

Here are some ways to do that:

• Read recent issues of the top scholarly journals in your field. Not sure what those are? Ask your professor/advisor, or you can use tools like Journal Citation Reports (below) to identify top journals by impact factor.
• Read Calls for Papers in your field. Most journals, conferences, and book editors promote requests for proposals for upcoming publications or presentations, which will give you an idea of the scope for what they are looking for and may also present current themes of interest to researchers in your discipline. If you are a member of a professional organization for your area, these organizations usually share those calls to their members as well.
• Identify and read seminal works in your field. Your professors may be able to point you to important works you should know about, and reading these may give you an idea for how you might build on that previous research.
• Talk to your professor/advisor/editor. They might have suggestions for what angle you might take for your literature review.
• Journal Citation Reports This link opens in a new window

What Is a Researchable Topic?

A good literature review begins with a good research question. What makes a good research question? Something answerable by more than a yes or no answer. For example,  climate change  is an okay topic to begin with, but what about it? Ask yourself the who, what, where, when, why, and how questions about your topic.  Climate change  might become how is coastal erosion caused by climate change affecting communities on the coast of Southeast Louisiana ? The more narrow your topic is, the easier it will be to limit your search.

Once you've selected a topic, you can refine it by either expanding or limiting your focus. You could limit your research to a particular time period (perhaps the past 10 years of research on the topic), the group studied (looking at only a particular population). You could expand your research by adding additional concepts (in our example, maybe looking at the effects of both coastal erosion and increased severe weather events) or removing limiters (like getting rid of a time period limit).

If you're finding that refining process challenging, do some background research. The research process is iterative, so every time you read another piece of information, your background knowledge grows and changes, and your research question may shift based on what you've read. We'll go over some ideas for developing background knowledge below.

Finding Example Review Articles

You can find example review articles to serve as a model and introduce you to important pieces of research. You can find review articles in a few ways:

• Search a database, such as Academic Search Complete, for  "literature review" OR review AND  your topic. E.g.  "literature review" OR review AND "Civil War"
• Search the E-Journals tab on the Libraries' homepage for  Annual Review of ... to find annual review journals in your discipline
• Use the Annual Reviews database (below) to browse issues of annual review journals. Note: this is helpful for some disciplines in the sciences and social sciences, but does not include annual reviews for disciplines like the arts, humanities, or business.
• Annual Reviews This link opens in a new window

Finding Dissertations/Theses

For those who are working on a literature review for a dissertation or thesis, it can be helpful to look at the literature reviews of others in your program at LSU or other institutions. Where you can find these depends on factors like the age and institution of the dissertation/thesis. You can find step-by-step instructions for how to search on the guide below.

• Finding Dissertations and Theses by Mitch Fontenot Last Updated Aug 1, 2024 646 views this year
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Literature Reviews: 1. Choose Your Topic

• Library Basics
• 1. Choose Your Topic
• How to Find Books
• Types of Clinical Study Designs
• Types of Literature
• 3. Search the Literature
• 4. Read & Analyze the Literature
• 5. Write the Review
• Keeping Track of Information
• Style Guides
• Books, Tutorials & Examples

Choosing Your Topic

Choose a topic that you find interesting . This will make the process more enjoyable and ultimately more rewarding.

Make sure the topic you choose has already been researched by others so that you’ll be able to find relevant articles to review. Having the most interesting topic in the world won’t help you write a literature review if no one else has written about it previously.  It might even be a good idea to come up with a few different ideas and do some preliminary research on each. That way if you find that your first choice topic hasn’t been explored much you’ll have something to fall back on.

Background Information

To begin your research, it's a good idea to seek out an overview of your topic.  Background information can provide you with:

• keywords and search terms to use to find more information on your topic
• an overview of the basic theories and/or major themes that are associated with your topic

The library has many resources, both electronic and in print that can help you discover a broad view of a subject.  Encyclopedias can provide you with a brief overview of of a topic, and lead you to other scholarship on the topic.

• Gale Virtual Reference Library : Search a collection of hundreds of high quality reference books, including encyclopedias, dictionaries, biographies, and handbooks.
• MedlinePlus :  Learn basics about health topics.

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• URL: https://research.library.gsu.edu/litrev

Literature Reviews

• What is a Literature Review?
• Video Tutorial

Choices Choices...

Refining your topic, determining the scope.

• Conducting Research
• Evaluating Resources
• Writing Your Review
• More Information: Websites & Books

The first step in any literature review is choosing a topic and there are two important factors to keep in mind when doing this.

1.  Your own interests  – It’s always best to choose a topic that you find interesting. This will make your work more enjoyable and ultimately more rewarding.

2.  The scholarly significance of your topic  – You want to make sure that the topic you choose has been researched by others so that you’ll be able to find relevant articles to review. Having the most interesting topic in the world won’t help you write a literature review if no one else has written about it.

It might even be a good idea to come up with a few different ideas and do some preliminary research on each. That way if you find that your first choice topic hasn’t be en explored much you’ll have something to fall back on.

If your topic is too broad consider ways that you can limit it.  Can you focus on a specific date range or gender?  What about a geographic location?  See if you can identify an individual aspect of the topic that particularly interests you.

If your topic is too narrow, think about related issues.   How can you take the topic you currently have and expand it without losing relevance?    

• How to Refine, Narrow, or Broaden a Topic

Almost as important as choosing your topic is determining the topic’s scope.  Choosing a topic that is too broad will make it very difficult to perform a comprehensive review of the research that has been done on that topic.  Similarly, choosing a topic that is too narrow will make it difficult to find enough significant research and impossible to see trends in the scholarship. 

Once you choose a topic and start your research you will almost certainly find that your topic changes a bit as you start to see what’s out there.  As your tweaking your topic think about the following factors:

        How long your review needs to be

        How many sources you’re supposed to use

        Any limitations your professor has given you such as:

                Only use sources published before/after a certain date

              Only use sources from peer reviewed journals

               Only use electronic sources

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What is a Literature Review?

A literature review is a comprehensive and up-to-date overview of the principal research about the topic being studied. Your literature review should contain the following information:

• The most pertinent studies and important past and current research and practices in the field
• An overview of sources you have explored while researching a particular topic
• An explanation to your readers as to how your research fits within a larger field of study.

The review helps form the intellectual framework for the study.

17 - what is a literature review  from  Joshua Vossler  on  Vimeo .

Why do a Literature Review?

At its core, a literature provides a summary of existing knowledge on a subject or topic and identifies areas where research is lacking: missing information, incomplete studies or studies that draw conflicting conclusions, or perhaps even outdated methods of research.

This can be especially helpful if you intend to conduct research of your own on this topic; by explaining where the previous studies have fallen short or leave openings for further examination, you provide a strong foundation and justification for the research project you intend to embark on.

Literature reviews can stand on their own as an article or assignment for a class, or they can serve as an introduction to a larger work, such as an article describing a study or even a book. They can also vary in granularity: a literature review in the beginning of an article might only summarize the largest or most influential studies, while an academic literature review will not only describe the research so far but look for common themes, analyze the quality of the research, and explain gaps where further research is needed.

Elements of a Successful Literature Review

When preparing your literature review, keep these questions in mind:

• What is your literature review about?
• Why are you studying this topic?
• How will you organize your sources?  (You could group them by themes or subtopics, or perhaps keep them in chronological order. The way you present your sources is important, so make sure you think hard about this!)
• What are the major themes/subtopics that you discovered when reading your sources?
• Where could more research be done to increase our understanding of this topic?

For each individual source, be prepared to analyze:

• Who were the key researchers and what are their qualifications?
• How was the research conducted?
• The similarities and differences between this source and the others in your literature review
• How this source contributes to greater understanding of the topic as a whole
• Any questions you have about the research done, which could identify opportunities for further study

When preparing your literature review, examine these elements and determine which ones would be best for your paper. (Tip: If you're not sure which parts of the literature review to include, ask your professor!)

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University Libraries

Literature review process.

• Introduction
• Video Tutorials

How to Select a Topic

Refine your topic.

• Select a Review Type
• Search the Literature
• Plan Before Reviewing
• Review the Literature
• Write the Review

The way to select a topic depends on whether you are writing a literature review for an assignment, or your own research. Here are some suggestions:

• If an assignment, read the instructions carefully and talk to the professor for clarification if necessary
• Scan academic journals for recent research trends
• Monitor professional blogs and listservs for hot topics
• Attend conferences to learn about current research
• Talk to classmates, colleagues, and professors about your ideas to help focus them. Even an interested friend outside the field can help you clarify your topic and why it's important.

The Libraries' subject guides are a good place to find information about journals and professional organizations in your field. On the Subject and Course Guides page, use the Subjects list or the search box at the top right to find the best subject guide for you.

Perhaps the most important point is to select a topic you find fascinating because you will be living with it for months or years!

You will need to do some initial literature searching and reading on your potential topic for two reasons:

• to clarify and solidify your research question because you can't test a vague research question
• determine if someone else has already asked and answered your research question

The next tab, Search the Literature, covers where and how to search. While doing your initial search, be looking for the niche where you can do your research:

• gaps in the knowledge on a subject area
• questions about your topic that remain unanswered
• areas of disagreement in your subject area that need to be settled 

After you've refined your topic, then you can go back and do further searching to find the most relevant sources for your research question, which you'll want to discuss in the literature review. Referring to the Literature Review Process image at the right, you are going to make a feedback loop between Select a Topic and Search the Literature. An initial, broad search will define your topic and then a second, narrower search will identify the sources most relevant to your refined topic.

Even in this initial searching, it's important to keep track of what you read and which articles are important in defining your topic. A bibliographic management software is an excellent tool for managing the literature. The UNT Libraries make RefWorks available to all UNT students, staff, and faculty, and its advantage is you have already paid for it through library fees. See the library's RefWorks guide for details on creating your account and using RefWorks.  Zotero  and Mendeley are free web-based reference managers you may want to explore; you will have to purchase software/online access for other reference managers, e.g., EndNote .

Need help? Then use the library's  Ask Us service. Get help from real people face-to-face, by phone, or by email.

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• Steps in Conducting a Literature Review

What is a literature review?

A literature review is an integrated analysis -- not just a summary-- of scholarly writings and other relevant evidence related directly to your research question.  That is, it represents a synthesis of the evidence that provides background information on your topic and shows a association between the evidence and your research question.

A literature review may be a stand alone work or the introduction to a larger research paper, depending on the assignment.  Rely heavily on the guidelines your instructor has given you.

Why is it important?

A literature review is important because it:

• Explains the background of research on a topic.
• Demonstrates why a topic is significant to a subject area.
• Discovers relationships between research studies/ideas.
• Identifies major themes, concepts, and researchers on a topic.
• Identifies critical gaps and points of disagreement.
• Discusses further research questions that logically come out of the previous studies.

APA7 Style resources

APA Style Blog - for those harder to find answers

1. Choose a topic. Define your research question.

Your literature review should be guided by your central research question.  The literature represents background and research developments related to a specific research question, interpreted and analyzed by you in a synthesized way.

• Make sure your research question is not too broad or too narrow.  Is it manageable?
• Begin writing down terms that are related to your question. These will be useful for searches later.
• If you have the opportunity, discuss your topic with your professor and your class mates.

2. Decide on the scope of your review

How many studies do you need to look at? How comprehensive should it be? How many years should it cover? 

• This may depend on your assignment.  How many sources does the assignment require?

3. Select the databases you will use to conduct your searches.

Make a list of the databases you will search. 

Where to find databases:

• use the tabs on this guide
• Find other databases in the Nursing Information Resources web page
• More on the Medical Library web page
• ... and more on the Yale University Library web page

4. Conduct your searches to find the evidence. Keep track of your searches.

• Use the key words in your question, as well as synonyms for those words, as terms in your search. Use the database tutorials for help.
• Save the searches in the databases. This saves time when you want to redo, or modify, the searches. It is also helpful to use as a guide is the searches are not finding any useful results.
• Review the abstracts of research studies carefully. This will save you time.
• Use the bibliographies and references of research studies you find to locate others.
• Check with your professor, or a subject expert in the field, if you are missing any key works in the field.
• Ask your librarian for help at any time.
• Use a citation manager, such as EndNote as the repository for your citations. See the EndNote tutorials for help.

Review the literature

Some questions to help you analyze the research:

• What was the research question of the study you are reviewing? What were the authors trying to discover?
• Was the research funded by a source that could influence the findings?
• What were the research methodologies? Analyze its literature review, the samples and variables used, the results, and the conclusions.
• Does the research seem to be complete? Could it have been conducted more soundly? What further questions does it raise?
• If there are conflicting studies, why do you think that is?
• How are the authors viewed in the field? Has this study been cited? If so, how has it been analyzed?

Tips: 

• Review the abstracts carefully.  
• Keep careful notes so that you may track your thought processes during the research process.
• Create a matrix of the studies for easy analysis, and synthesis, across all of the studies.
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How To Write A Literature Review - A Complete Guide

Table of Contents

A literature review is much more than just another section in your research paper. It forms the very foundation of your research. It is a formal piece of writing where you analyze the existing theoretical framework, principles, and assumptions and use that as a base to shape your approach to the research question.

Curating and drafting a solid literature review section not only lends more credibility to your research paper but also makes your research tighter and better focused. But, writing literature reviews is a difficult task. It requires extensive reading, plus you have to consider market trends and technological and political changes, which tend to change in the blink of an eye.

Now streamline your literature review process with the help of SciSpace Copilot. With this AI research assistant, you can efficiently synthesize and analyze a vast amount of information, identify key themes and trends, and uncover gaps in the existing research. Get real-time explanations, summaries, and answers to your questions for the paper you're reviewing, making navigating and understanding the complex literature landscape easier.

In this comprehensive guide, we will explore everything from the definition of a literature review, its appropriate length, various types of literature reviews, and how to write one.

What is a literature review?

A literature review is a collation of survey, research, critical evaluation, and assessment of the existing literature in a preferred domain.

Eminent researcher and academic Arlene Fink, in her book Conducting Research Literature Reviews , defines it as the following:

“A literature review surveys books, scholarly articles, and any other sources relevant to a particular issue, area of research, or theory, and by so doing, provides a description, summary, and critical evaluation of these works in relation to the research problem being investigated.

Literature reviews are designed to provide an overview of sources you have explored while researching a particular topic, and to demonstrate to your readers how your research fits within a larger field of study.”

Simply put, a literature review can be defined as a critical discussion of relevant pre-existing research around your research question and carving out a definitive place for your study in the existing body of knowledge. Literature reviews can be presented in multiple ways: a section of an article, the whole research paper itself, or a chapter of your thesis.

A literature review does function as a summary of sources, but it also allows you to analyze further, interpret, and examine the stated theories, methods, viewpoints, and, of course, the gaps in the existing content.

As an author, you can discuss and interpret the research question and its various aspects and debate your adopted methods to support the claim.

What is the purpose of a literature review?

A literature review is meant to help your readers understand the relevance of your research question and where it fits within the existing body of knowledge. As a researcher, you should use it to set the context, build your argument, and establish the need for your study.

What is the importance of a literature review?

The literature review is a critical part of research papers because it helps you:

• Gain an in-depth understanding of your research question and the surrounding area
• Convey that you have a thorough understanding of your research area and are up-to-date with the latest changes and advancements
• Establish how your research is connected or builds on the existing body of knowledge and how it could contribute to further research
• Elaborate on the validity and suitability of your theoretical framework and research methodology
• Identify and highlight gaps and shortcomings in the existing body of knowledge and how things need to change
• Convey to readers how your study is different or how it contributes to the research area

How long should a literature review be?

Ideally, the literature review should take up 15%-40% of the total length of your manuscript. So, if you have a 10,000-word research paper, the minimum word count could be 1500.

Your literature review format depends heavily on the kind of manuscript you are writing — an entire chapter in case of doctoral theses, a part of the introductory section in a research article, to a full-fledged review article that examines the previously published research on a topic.

Another determining factor is the type of research you are doing. The literature review section tends to be longer for secondary research projects than primary research projects.

What are the different types of literature reviews?

All literature reviews are not the same. There are a variety of possible approaches that you can take. It all depends on the type of research you are pursuing.

Here are the different types of literature reviews:

Argumentative review

It is called an argumentative review when you carefully present literature that only supports or counters a specific argument or premise to establish a viewpoint.

Integrative review

It is a type of literature review focused on building a comprehensive understanding of a topic by combining available theoretical frameworks and empirical evidence.

Methodological review

This approach delves into the ''how'' and the ''what" of the research question —  you cannot look at the outcome in isolation; you should also review the methodology used.

Systematic review

This form consists of an overview of existing evidence pertinent to a clearly formulated research question, which uses pre-specified and standardized methods to identify and critically appraise relevant research and collect, report, and analyze data from the studies included in the review.

Meta-analysis review

Meta-analysis uses statistical methods to summarize the results of independent studies. By combining information from all relevant studies, meta-analysis can provide more precise estimates of the effects than those derived from the individual studies included within a review.

Historical review

Historical literature reviews focus on examining research throughout a period, often starting with the first time an issue, concept, theory, or phenomenon emerged in the literature, then tracing its evolution within the scholarship of a discipline. The purpose is to place research in a historical context to show familiarity with state-of-the-art developments and identify future research's likely directions.

Theoretical Review

This form aims to examine the corpus of theory accumulated regarding an issue, concept, theory, and phenomenon. The theoretical literature review helps to establish what theories exist, the relationships between them, the degree the existing approaches have been investigated, and to develop new hypotheses to be tested.

Scoping Review

The Scoping Review is often used at the beginning of an article, dissertation, or research proposal. It is conducted before the research to highlight gaps in the existing body of knowledge and explains why the project should be greenlit.

State-of-the-Art Review

The State-of-the-Art review is conducted periodically, focusing on the most recent research. It describes what is currently known, understood, or agreed upon regarding the research topic and highlights where there are still disagreements.

Can you use the first person in a literature review?

When writing literature reviews, you should avoid the usage of first-person pronouns. It means that instead of "I argue that" or "we argue that," the appropriate expression would be "this research paper argues that."

Do you need an abstract for a literature review?

Ideally, yes. It is always good to have a condensed summary that is self-contained and independent of the rest of your review. As for how to draft one, you can follow the same fundamental idea when preparing an abstract for a literature review. It should also include:

• The research topic and your motivation behind selecting it
• A one-sentence thesis statement
• An explanation of the kinds of literature featured in the review
• Summary of what you've learned
• Conclusions you drew from the literature you reviewed
• Potential implications and future scope for research

Here's an example of the abstract of a literature review

Is a literature review written in the past tense?

Yes, the literature review should ideally be written in the past tense. You should not use the present or future tense when writing one. The exceptions are when you have statements describing events that happened earlier than the literature you are reviewing or events that are currently occurring; then, you can use the past perfect or present perfect tenses.

How many sources for a literature review?

There are multiple approaches to deciding how many sources to include in a literature review section. The first approach would be to look level you are at as a researcher. For instance, a doctoral thesis might need 60+ sources. In contrast, you might only need to refer to 5-15 sources at the undergraduate level.

The second approach is based on the kind of literature review you are doing — whether it is merely a chapter of your paper or if it is a self-contained paper in itself. When it is just a chapter, sources should equal the total number of pages in your article's body. In the second scenario, you need at least three times as many sources as there are pages in your work.

Quick tips on how to write a literature review

To know how to write a literature review, you must clearly understand its impact and role in establishing your work as substantive research material.

You need to follow the below-mentioned steps, to write a literature review:

• Outline the purpose behind the literature review
• Search relevant literature
• Examine and assess the relevant resources
• Discover connections by drawing deep insights from the resources
• Structure planning to write a good literature review

1. Outline and identify the purpose of  a literature review

As a first step on how to write a literature review, you must know what the research question or topic is and what shape you want your literature review to take. Ensure you understand the research topic inside out, or else seek clarifications. You must be able to the answer below questions before you start:

• How many sources do I need to include?
• What kind of sources should I analyze?
• How much should I critically evaluate each source?
• Should I summarize, synthesize or offer a critique of the sources?
• Do I need to include any background information or definitions?

Additionally, you should know that the narrower your research topic is, the swifter it will be for you to restrict the number of sources to be analyzed.

2. Search relevant literature

Dig deeper into search engines to discover what has already been published around your chosen topic. Make sure you thoroughly go through appropriate reference sources like books, reports, journal articles, government docs, and web-based resources.

You must prepare a list of keywords and their different variations. You can start your search from any library’s catalog, provided you are an active member of that institution. The exact keywords can be extended to widen your research over other databases and academic search engines like:

• Google Scholar
• Microsoft Academic
• Science.gov

Besides, it is not advisable to go through every resource word by word. Alternatively, what you can do is you can start by reading the abstract and then decide whether that source is relevant to your research or not.

Additionally, you must spend surplus time assessing the quality and relevance of resources. It would help if you tried preparing a list of citations to ensure that there lies no repetition of authors, publications, or articles in the literature review.

3. Examine and assess the sources

It is nearly impossible for you to go through every detail in the research article. So rather than trying to fetch every detail, you have to analyze and decide which research sources resemble closest and appear relevant to your chosen domain.

While analyzing the sources, you should look to find out answers to questions like:

• What question or problem has the author been describing and debating?
• What is the definition of critical aspects?
• How well the theories, approach, and methodology have been explained?
• Whether the research theory used some conventional or new innovative approach?
• How relevant are the key findings of the work?
• In what ways does it relate to other sources on the same topic?
• What challenges does this research paper pose to the existing theory
• What are the possible contributions or benefits it adds to the subject domain?

Be always mindful that you refer only to credible and authentic resources. It would be best if you always take references from different publications to validate your theory.

Always keep track of important information or data you can present in your literature review right from the beginning. It will help steer your path from any threats of plagiarism and also make it easier to curate an annotated bibliography or reference section.

4. Discover connections

At this stage, you must start deciding on the argument and structure of your literature review. To accomplish this, you must discover and identify the relations and connections between various resources while drafting your abstract.

A few aspects that you should be aware of while writing a literature review include:

• Rise to prominence: Theories and methods that have gained reputation and supporters over time.
• Constant scrutiny: Concepts or theories that repeatedly went under examination.
• Contradictions and conflicts: Theories, both the supporting and the contradictory ones, for the research topic.
• Knowledge gaps: What exactly does it fail to address, and how to bridge them with further research?
• Influential resources: Significant research projects available that have been upheld as milestones or perhaps, something that can modify the current trends

Once you join the dots between various past research works, it will be easier for you to draw a conclusion and identify your contribution to the existing knowledge base.

5. Structure planning to write a good literature review

There exist different ways towards planning and executing the structure of a literature review. The format of a literature review varies and depends upon the length of the research.

Like any other research paper, the literature review format must contain three sections: introduction, body, and conclusion. The goals and objectives of the research question determine what goes inside these three sections.

Nevertheless, a good literature review can be structured according to the chronological, thematic, methodological, or theoretical framework approach.

Literature review samples

1. Standalone

2. As a section of a research paper

How SciSpace Discover makes literature review a breeze?

SciSpace Discover is a one-stop solution to do an effective literature search and get barrier-free access to scientific knowledge. It is an excellent repository where you can find millions of only peer-reviewed articles and full-text PDF files. Here’s more on how you can use it:

Find the right information

Find what you want quickly and easily with comprehensive search filters that let you narrow down papers according to PDF availability, year of publishing, document type, and affiliated institution. Moreover, you can sort the results based on the publishing date, citation count, and relevance.

Assess credibility of papers quickly

When doing the literature review, it is critical to establish the quality of your sources. They form the foundation of your research. SciSpace Discover helps you assess the quality of a source by providing an overview of its references, citations, and performance metrics.

Get the complete picture in no time

SciSpace Discover’s personalized suggestion engine helps you stay on course and get the complete picture of the topic from one place. Every time you visit an article page, it provides you links to related papers. Besides that, it helps you understand what’s trending, who are the top authors, and who are the leading publishers on a topic.

Make referring sources super easy

To ensure you don't lose track of your sources, you must start noting down your references when doing the literature review. SciSpace Discover makes this step effortless. Click the 'cite' button on an article page, and you will receive preloaded citation text in multiple styles — all you've to do is copy-paste it into your manuscript.

Final tips on how to write a literature review

A massive chunk of time and effort is required to write a good literature review. But, if you go about it systematically, you'll be able to save a ton of time and build a solid foundation for your research.

We hope this guide has helped you answer several key questions you have about writing literature reviews.

Would you like to explore SciSpace Discover and kick off your literature search right away? You can get started here .

Frequently Asked Questions (FAQs)

1. how to start a literature review.

• What questions do you want to answer?

• What sources do you need to answer these questions?

• What information do these sources contain?

• How can you use this information to answer your questions?

2. What to include in a literature review?

• A brief background of the problem or issue

• What has previously been done to address the problem or issue

• A description of what you will do in your project

• How this study will contribute to research on the subject

3. Why literature review is important?

The literature review is an important part of any research project because it allows the writer to look at previous studies on a topic and determine existing gaps in the literature, as well as what has already been done. It will also help them to choose the most appropriate method for their own study.

4. How to cite a literature review in APA format?

To cite a literature review in APA style, you need to provide the author's name, the title of the article, and the year of publication. For example: Patel, A. B., & Stokes, G. S. (2012). The relationship between personality and intelligence: A meta-analysis of longitudinal research. Personality and Individual Differences, 53(1), 16-21

5. What are the components of a literature review?

• A brief introduction to the topic, including its background and context. The introduction should also include a rationale for why the study is being conducted and what it will accomplish.

• A description of the methodologies used in the study. This can include information about data collection methods, sample size, and statistical analyses.

• A presentation of the findings in an organized format that helps readers follow along with the author's conclusions.

6. What are common errors in writing literature review?

• Not spending enough time to critically evaluate the relevance of resources, observations and conclusions.

• Totally relying on secondary data while ignoring primary data.

• Letting your personal bias seep into your interpretation of existing literature.

• No detailed explanation of the procedure to discover and identify an appropriate literature review.

7. What are the 5 C's of writing literature review?

• Cite - the sources you utilized and referenced in your research.

• Compare - existing arguments, hypotheses, methodologies, and conclusions found in the knowledge base.

• Contrast - the arguments, topics, methodologies, approaches, and disputes that may be found in the literature.

• Critique - the literature and describe the ideas and opinions you find more convincing and why.

• Connect - the various studies you reviewed in your research.

8. How many sources should a literature review have?

When it is just a chapter, sources should equal the total number of pages in your article's body. if it is a self-contained paper in itself, you need at least three times as many sources as there are pages in your work.

9. Can literature review have diagrams?

• To represent an abstract idea or concept

• To explain the steps of a process or procedure

• To help readers understand the relationships between different concepts

10. How old should sources be in a literature review?

Sources for a literature review should be as current as possible or not older than ten years. The only exception to this rule is if you are reviewing a historical topic and need to use older sources.

11. What are the types of literature review?

• Argumentative review

• Integrative review

• Methodological review

• Systematic review

• Meta-analysis review

• Historical review

• Theoretical review

• Scoping review

• State-of-the-Art review

12. Is a literature review mandatory?

Yes. Literature review is a mandatory part of any research project. It is a critical step in the process that allows you to establish the scope of your research, and provide a background for the rest of your work.

But before you go,

• Six Online Tools for Easy Literature Review
• Evaluating literature review: systematic vs. scoping reviews
• Systematic Approaches to a Successful Literature Review
• Writing Integrative Literature Reviews: Guidelines and Examples

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The Literature Review

The first step for any researcher when choosing a topic is to complete a literature review.

A literature review helps you to identify a topic worthy of further study. You will be able to answer the "so what" question about your topic, because you can point to a gap in the literature or a path for you to extend others' research to further establish the findings as valid.

Second, literature reviews help you identify the different research methods used by scholars in the field that have produced valid and reliable results. You can replicate these methods in your own work because very few scholars invent research methods from scratch.

Third, and prehaps most important, academic research is done on the shoulders of prior scholars; it is a collaborative and community endeavor. You need to give credit to those who have come before you and draw upon their work to produce your own. You will not be a credible author of research if you cannot articulate what the field already knows and believes is true about the topic. A reader cannot trust what you have to say if you do not frame your work within the broader context of the exisiting research community.

You can start your own literature review by searching for published articles on your broad area of interest in academic journals.

• By reviewing journal articles on your broad interest, you'll start to see how other researchers have broken down the subject into smaller, manageable topics. You don't want a project that is about the entire elephant, just his right toenail.
• When you are doing a review of your topic, you are looking for a balance of prior research. You need to choose a topic where there is enough prior work to support, frame, and ground your research, but not so much that there is very little left to say that is new and interesting. 
• Once you find a particularly relevant article, be sure to “mine’ the work's reference section for additional sources that are squarely related to your topic. 
• In using any literature, pay particular attention to how recently it was published and how valid and reliable it is, and in some cases, to the scholarly reputation of the author or publisher. Ordinarily, you want to stick to research that is five years old or less, unless it is a seminal work in the field that is timeless.
• Reach out to the reference librarians in Harvard’s libraries . They can give you information about relevant databases and help you to perform literature searches. It is important for you to learn how to use HOLLIS, the University Libraries’ online catalog, as well as the journal indexing and abstracting resources, the various encyclopedias, dictionaries and bibliographies in your field of interest.

Past Capstone Topics

If you don't have a specific topic in mind and are in need of inspiration before diving head first into a literature review, browse the list of past capstone topics (see sidebar). The research projects of your fellow students will surely spark your creative thinking.

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• Determining where and how this question “fits into the current landscape of ideas” within your respective discipline.
• Proposing methodology well-suited for addressing this question (and perhaps testing associated hypotheses).
• Mapping out what you hope to accomplish with this approach.
• Identifying stakeholders potentially impacting, or being impacted by, the research.
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Literature Reviews

Steps in the literature review process.

• What is a literature review?
• Define your research question
• Determine inclusion and exclusion criteria
• Choose databases and search
• Review Results
• Synthesize Results
• Analyze Results
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• Artificial Intelligence (AI) Tools
• You may need to some exploratory searching of the literature to get a sense of scope, to determine whether you need to narrow or broaden your focus
• Identify databases that provide the most relevant sources, and identify relevant terms (controlled vocabularies) to add to your search strategy
• Finalize your research question
• Think about relevant dates, geographies (and languages), methods, and conflicting points of view
• Conduct searches in the published literature via the identified databases
• Check to see if this topic has been covered in other discipline's databases
• Examine the citations of on-point articles for keywords, authors, and previous research (via references) and cited reference searching.
• Save your search results in a citation management tool (such as Zotero, Mendeley or EndNote)
• De-duplicate your search results
• Make sure that you've found the seminal pieces -- they have been cited many times, and their work is considered foundational 
• Check with your professor or a librarian to make sure your search has been comprehensive
• Evaluate the strengths and weaknesses of individual sources and evaluate for bias, methodologies, and thoroughness
• Group your results in to an organizational structure that will support why your research needs to be done, or that provides the answer to your research question  
• Develop your conclusions
• Are there gaps in the literature?
• Where has significant research taken place, and who has done it?
• Is there consensus or debate on this topic?
• Which methodological approaches work best?
• For example: Background, Current Practices, Critics and Proponents, Where/How this study will fit in 
• Organize your citations and focus on your research question and pertinent studies
• Compile your bibliography

Note: The first four steps are the best points at which to contact a librarian. Your librarian can help you determine the best databases to use for your topic, assess scope, and formulate a search strategy.

Videos Tutorials about Literature Reviews

This 4.5 minute video from Academic Education Materials has a Creative Commons License and a British narrator.

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Literature Review: The What, Why and How-to Guide — Tips for Writing Literature Reviews

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• Introduction
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• Strategies to Find Sources
• Evaluating Sources & Lit. Reviews
• Writing Literature Review: Useful Sites
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Literature Review Writing Tips

Synthesize your findings. Your findings are your evaluation of the literature reviewed: what you consider the strengths and weakness of the studies reviewed; the comparison you did between studies; research trends and gaps in the research that you identified, etc.

Across the articles that you read, pay attention to the:

• Common/contested findings
• Important trends
• Influential theories
• Do not over quote. If you only quote from every single article you found, you are not showing any original thinking or analysis. Use quotes judiciously. Use quotes to highlight a particular passage or thought that exemplifies the research, theory or topic you are researching.
• Instead, use paraphrasing. Restate the main ideas of a paragraph or section to highlight, in your own words, the important points made by the author.
• Summarize findings, important sections, a whole article or book: This is different from paraphrasing since you are not re-stating the author words but summarizing the main point of what you are reading in a concise matter for your reader.
• Paraphrase and Summary (University of Toronto) Advice on when to paraphrase vs. summarize when writing a paper
• Citation Guides and Management Tools UConn Library guide on using different citation styles and selecting tools for citation management
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• Get started with reviewing the literature
• A literature review is NOT...
• Types of literature reviews
• Finding published literature reviews

A literature review examines existing contributions around a topic, question, or issue in a field of study. These contributions can include peer reviewed articles, books, and other published research. Literature reviews can be used to give an overview of a field of research to describe theories, explore methodologies, and discuss developments in a field by drawing on research from multiple studies.

A literature review can be used to:

• Ground yourself in a topic and learn more about it
• Find new ideas to explore
• Discover existing research (so you do not repeat it)
• Determine what methodologies have already been used to research a topic
• Discover flaws, problems, and gaps that exist in the literature
• Critique or evaluate existing research on a topic
• Situate your research in a larger context or advocate for your research by demonstrating that you are extending upon existing knowledge

What makes a good literature review?

A good literature review has a clear scope - don't try to collect everything about a topic that has ever been published! Instead focus in on what you want to know more about your specific research topic. A good literature review might also:

• Cover all important relevant literature - if you are finding too many sources, try narrowing in on key authors and well cited-research
• Is up-to-date - limit your review to a certain time period
• Provide an insightful analysis of the ideas and conclusions in the literature
• Point out similarities and differences, strengths and weaknesses in the literature
• Identify gaps in the literature for future research - or to set up your own research as relevant!
• Provides the context for which the literature is important - what impact does the literature have on countries, people, industries, etc.
• Systematic Review: AI's Impact on Higher Education - Learning, Teaching, and Career Opportunities Review this example to learn one way a literature review can be written.

A well conducted literature review can set up your final research product. Many researchers will write literature reviews at the beginning of their research article to situate their research within the larger context in their field or topic. This demonstrates that they have awareness of their topic and how they are building upon the topic. Keeping good notes when you are conducting your review can help set you up for success when you begin work on your final research product. When conducting your literature review AVOID:

• Summarizing articles INSTEAD draw connections between different articles
• Creating a chronological account of a topic INSTEAD focus on current literature or foundational works
• Sharing personal opinions on whether or not you liked articles INSTEAD ask questions

A strong literature review organizes existing contributions to a conversation into categories or “themes.” There are multiple ways to approach targeting a literature review to achieve your specific learning goals. Common types of reviews include:

Traditional Review

• Analyzes, synthesizes, and critiques a body of literature
• Identifies patterns and themes in the literature
• Draws conclusions from the literature
• Identifies gaps in literature

Argumentative Review

• Examines literature selectively in order to support or refuse an argument, assumption, or philosophical problem already established in the literature

Historical Review

• Examines research throughout a period of time
• Places research in a historical context

Integrative Review

• Aims to review, critique, and synthesize literature on a topic in an integrated way that new frameworks and perspectives on the topic are generated
• Might include case studies, observational studies, and meta-analysis, as well as other types of research

Methodological Review

• Focuses on method of analysis (how researchers came to the idea) rather than on findings (their final conclusions and what they found)

Published literature reviews are called review articles, however, research articles often contain brief literature reviews at the beginning to give context to the study within that article. 

By reviewing published literature reviews you can more easily ground yourself in a topic, it's main themes, and find relevant literature for your own review.

Tip: When identifying main themes related to your topic, look at the headers in a research article. Some authors choose to list their literature review themes as headers to organize their review. Others might choose to name their themes in the first few sentences of each paragraph in their review. Sometimes a literature review, especially if it is brief, will be included in the introduction or some other beginning part of the article.

Approaching a Literature Review

• Evidenced-based approach

An  Evidence-Based Management Framework  can help direct your literature review process.

"Evidence-Based" is a term that was originally coined in the 1990s in the field of medicine, but today its principles extend across disciplines as varied as education, social work, public work, and management. Evidence-Based Management focuses on improving decision-making process.

While conducting a literature review, we need to gather evidence and summarize it to support our decisions and conclusions regarding the topic or problem. We recommend you use a 4 step approach of the Evidence-Based Management Framework while working on a literature review.

During the "Ask" step , you need to define a specific topic, thesis, problem, or research question that your literature review will be focusing on.

It may require first to gain some knowledge about the area or discipline that your topic, thesis, problem, or research question originate from. At this moment, think about a type of a literature review you plan to work on. For example are you reviewing the literature to educate yourself on a topic, to plan to write a literature review article, or to prepare to situate your research project within the broader literature?

Use this to determine the scope of your literature review and the type of publications you need to use (e.g., journals, books, governmental documents, conference proceedings, dissertations, training materials, and etc.).

A few other questions you might ask are:

• Is my topic, question, or problem narrowed enough to exclude irrelevant material?
• What is the number of sources to use to fulfill the research need and represent the scope? i.e. is the topic narrow enough that you want to find everything that exists or broad enough that you only want to see what a few experts have to say?
• What facets of a topic are the focus? Am I looking at issues of theory? methodology? policy? quantitative research? or qualitative research?

During the  “Acquire” step , you are actively gathering evidence and information that relates to your topic or problem.

This is when you search for related scholarly articles, books, dissertations, and etc. to see  “what has been done”  and  “what we already know”  about the topic or problem. While doing a literature review in business, you may also find it helpful to review various websites such as professional associations, government websites offering industry data, companies’ data, conference proceedings, or training materials. It may increase your understanding about the current state of the knowledge in your topic or problem.

During this step, you should keep a careful records of the literature and website resources you review. 

During the  “Appraise” step,  you actively evaluate the sources used to acquire the information. To make decisions regarding the relevance and trustworthiness of the sources and information, you can ask the following questions:

• Is the source reputable? (e.g., peer-reviewed journals and government websites typically offer more trustworthy information)
• How old (dated) is the source? Is it still current, or is there newer updated information that you might be able to find?
• How closely does the source match the topic / problem / issue you are researching?

During this step, you may decide to eliminate some of the material you gathered during the  “Acquire” step . Similarly, you may find that you need to engage in additional searches to find information that suits your needs. This is normal—the process of the  "Appraisal" step  often uncovers new keywords and new potential sources.

During the  “Aggregate” step , you “pull together” the information you deemed trustworthy and relevant. The information gathered and evaluated needs to be summarized in a narrative form—a summary of your findings. 

While summarizing and aggregating information, use synthesis language like this: 

• Much of the literature on  [topic X]  focuses on  [major themes] .  
• In recent years, researchers have begun investigating  [facets A, B, and C]  of  [topic X] .
• The studies in this review of  [topic X]  confirm / suggest / call into question / support  [idea / practice / finding / method / theory / guideline Y].
• In the reviewed studies  [variable X]  was generally associated with higher / lower rates of  [outcome Y].
• A limitation of some / most / all of these studies is  [Y].
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Written by: Katherine Watson

Starting a literature review can be a daunting task. A literature review is a foundational aspect of a dissertation, but you may also be asked to produce a standalone literature review. You may be unfamiliar with the term literature review, and the first thing to note is that it is not that different to essays you are used to writing….

What is a literature review?

A literature review is a critical summary of existing work on a chosen topic. Importantly, it is not a list or description of ALL texts relevant to your topic. Your literature review should pick up on important ideas, debates, theories, methods and omissions across this body of literature. Rather than repeating or re-wording this information, a literature review represents your own evaluations and comparisons between these texts and should highlight your key take-aways from those readings.

What are the main functions of a literature review?

• Demonstrate that you have read widely on your topic and have a strong understanding.
• Recognise existing work.
• (In the context of a dissertation) Create the foundation for your research and justify the direction, methods and questions you pursue.
• (In the context of a dissertation) Introduce the background concepts and theories which will underpin your discussion chapter.

Step 1: Gathering literature

• Key words / search terms. Devise several key words or search terms that encapsulate your research topic.
• Use online research engines. Input your key words into free online search engines. iFind  by Swansea University is a great place to start. Other options include Google Scholar, ResearchGate, ScienceDirect and Social Science Research Network. There are also discipline specific search engines such as PubMed Central for healthcare and science. There are pros and cons to different search engines in terms of their coverage and accuracy, so it’s worth using at least two to gain access to a fuller range of literature. Be very systematic!
• Check bibliographies. Utilise the bibliography of relevant journal articles or books to gather even more references. This can be particularly useful for locating older publications which may not be flagged on search engines.
• Talk to a librarian. Librarians are experts in conducting literature searches. If you are lost about where and how to find literature contact them early and discuss the questions you’re asking, the problem you’re addressing and area you’re working on. They may be able to suggest online databases, journals and books.

Step 2: Organising literature

• Start collating an accurate record of sources on a Word document or Excel spreadsheet. Be sure to note the title, author(s), and date. You may copy and paste the abstract and key words or write your own summary. However, keep space to add your own evaluation of the literature (see below).
• Create a logical structure whether that be chronological or thematic. The advantage of creating a table in an Excel spreadsheet is that you can reorder your sources according to when they were published or another criterion.

Step 3: Critical reading

It is important to be selective, you don’t have time to read everything. Tips on how to be a more effective and efficient reader can be found on  Read Right, Write Right.

While the body of literature may be large, you will typically find repetition and common ground between texts. Make a note of these similarities, as well as where approaches or arguments diverge and contrast.

Weed out any sources which are not relevant after your reading and consolidate your list/table of core literature.

Step 4: Critical analysis

This is your opportunity to elaborate on your record of core literature by producing your own summary and reflection of the texts. Return to any notes you’ve written already and re-read relevant sections of the texts if necessary. Don’t just repeat their arguments (though you may note down a small number of quotations). Keep your focal topic at the front of your mind!

The questions listed below can be used as prompts to get you thinking critically:

• What are the main theories/concepts/methods/approaches being used? How are they justified? What are its key features?
• Are the conclusions logical and well supported?
• Does the information fit with what you already know?
• Does it contradict or dispute other evidence or arguments?
• Are there gaps or limitations? Has the author overlooked or misunderstood anything?
• How can you use this in your own work?

As you think, WRITE !  What to do with all of those notes  will help you process your ideas, and these notes will likely find their way into your literature review as your start to write it up formally.

How to Choose a Topic for a Systematic Review

Automate every stage of your literature review to produce evidence-based research faster and more accurately.

What is a systematic review.

Before you proceed with choosing a topic, let’s start with the basics of what is a systematic review ?

A systematic review is a research-intensive study of studies, commonly used in evidence-based medicine and academia, though it’s valuable in other fields, as well. It aims to answer a specific research question using a comprehensive strategy that selects, evaluates and interprets published and unpublished studies relevant to the topic. Once all the qualified research is assessed, the results are presented as a balanced summary of findings to recommend effective practices, quantify uncertainty, and determine gaps in existing knowledge.

It is a rigorous process, prompting a lot of researchers to ask, “ How long does it take to do a systematic review ?”. The answer varies depending on several factors including the topic, the research method, and the availability of related studies. That said, from learning how to write a systematic review introduction to potentially getting the work published, it generally takes between six to eighteen months.

What Makes A Good Systematic Review Topic?

A good systematic review topic must be:

It’s pointless to undertake months of research to study a question that’s been previously answered, unless, of course, there are updates that make previous studies irrelevant. Updates should justify the conduction of a fresh systematic review considering that they are laborious and resource-intensive. Do a quick literature review, perform qualitative research (e.g. interviews), and check your sources to ensure that your topic is new.

Your topic should not be too broad or else the systematic review will be impossible to implement due to the sheer amount of related studies that you’ll have to assess. Keep it focused and construct it in a way that paves a more straightforward path towards finding its answer.

A systematic review topic should be specific in that it leaves no room for misinterpretation or vagueness. That said, be careful not to make it too narrow; you might find yourself struggling to find relevant data if you do so.

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The PICO Framework

One way to qualify a good systematic review topic is to use the PICO approach to formulate it. This framework is used by evidence-based practitioners to form their research questions in a way that facilitates the review. PICO stands for:

Patient, Problem, or Population

Consider the patient or the population that your topic deals with; think of their demographics, social state, economic status, etc. If it doesn’t deal with certain individuals per se, then ask yourself: what is the type of problem my research will address?

Intervention

Think about what type of intervention is being considered, such as medication, therapy, educational technique, as well the issues at risk or improvement.

Comparison, Or Control

Though not all kinds of research call for it, it’s helpful to consider if there’s any comparison variable to be considered versus the intervention. This could be another sort of treatment or none at all.

Here is where your inferences come to play. The outcome deals with the desired effect from the answer of the review, as well as any possible side effects or unwanted results. The outcome should be measurable with statistically significant findings.

How To Choose A Systematic Review Topic

The best way to choose a systematic review topic is to start with a draft research question. Do a preliminary check through a quick review of existing literature and other qualitative research to ensure that it hasn’t been done before. Then, fine-tune your topic by consulting with librarians and industry experts, focusing it into an answerable question, and formulating it through the PICO framework.

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