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Zimbardo's stanford prison experiment, zimbardo's stanford prison experiment revealed how social roles can influence our behavior. we look at how it was conducted and what we can learn from it..

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Zimbardo's Stanford Prison Experiment

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Subjects were randomly assigned to play the role of "prisoner" or "guard". Those assigned to play the role of guard were given sticks and sunglasses; those assigned to play the prisoner role were arrested by the Palo Alto police department, deloused, forced to wear chains and prison garments, and transported to the basement of the Stanford psychology department, which had been converted into a makeshift jail.

Several of the guards became progressively more sadistic - particularly at night when they thought the cameras were off, despite being picked by chance out of the same pool as the prisoners.

The experiment very quickly got out of hand. A riot broke out on day two. One prisoner developed a psychosomatic rash all over his body upon finding out that his "parole" had been turned down. After only 6 days (of a planned two weeks), the experiment was shut down, for fear that one of the prisoners would be seriously hurt.

Although the intent of the experiment was to examine captivity, its result has been used to demonstrate the impressionability and obedience of people when provided with a legitimizing ideology and social and institutional support. It is also used to illustrate cognitive dissonance theory and the power of seniority/authority.

It can be argued that the conclusions that Professor Zimbardo and others have drawn from the Stanford Prison Experiment are not valid. Professor Zimbardo acknowleges that he was not merely an observer in the experiment but an active participant and in some cases it is clear he was influencing the direction the experiment went.

For example, Professor Zimbardo cites the fact that all of the "guards" wore sunglasses as an example of their dehumanization. However, the sunglasses were not spontaneously chosen as apparel by the students; they were given to them by Professor Zimbardo. The student "guards" were also issued batons by Professor Zimbardo on their first day, which may have predisposed them to consider physical force as an acceptable means of running the "prison".

Professor Zimbardo also acknowleges initiating several procedures that do not occur in actual prisons, such as blindfolding incoming "prisoners", making them wear women's clothing, not allowing them to wear underwear, not allowing them to look out windows, and not allowing them to use their names. Professor Zimbardo justifies this by stating that prison is a confusing and dehumanizing experience and it was necessary to enact these procedures to put the "prisoners" in the proper frame of mind. However, it opens the question of whether Professor Zimbardo's simulation is an accurate reflection of the reality of incarceration or a reflection of Professor Zimbardo's preconceived opinions of what actual incarceration is like.

Does Zimbardo's study explain Abu Ghraib abuse?

The human rights abuses that occurred at the Abu Ghraib prison under the authority of the American armed forces in the aftermath of the 2003 Iraq war may be a recent example of what happened in the experiment in real life. Soldiers were thrust into the role of prison guards and began to sadistically torment prisoners there and at other detention sites in Afghanistan and Iraq. Many of the specific acts of humiliation were similar to those that occurred in the Stanford Prison Experiment, according to Zimbardo.

This theory has been challenged by allegations by Seymour Hersh in the New Yorker that these soldiers were in fact acting under direct orders of their superiors as part of a top secret Pentagon intelligence gathering program authorized by Secretary of Defense Donald Rumsfeld.

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  • Source: https://en.wikipedia.org/wiki/Stanford_Prison_Experiment

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The Stanford Prison Experiment: The Power of the Situation

  • First Online: 20 January 2024

Cite this chapter

cognitive dissonance theory stanford prison experiment

  • Harry Perlstadt   ORCID: orcid.org/0000-0002-0233-0463 3  

Part of the book series: Clinical Sociology: Research and Practice ((CSRP))

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Philip Zimbardo is best known for his 1971 Stanford Prison Experiment (SPE). Early in his career, he conducted experiments in the psychology of deindividualization, in which a person in a group or crowd no longer acts as a responsible individual but is swept along and participates in antisocial actions. After moving to Stanford University, he began to focus on institutional power over the individual in group settings, such as long-term care facilities for the elderly and prisons. His research proposal for a simulated prison was approved by the Stanford University Human Subjects Research Review Committee in July 1971. He built a mock prison in the basement of the University’s psychology building and recruited college-aged male subjects to play prisoners and guards. The study began on Sunday, August 8th, and was to run for 2 weeks but ended on Friday morning August 13th. In less than a week, several of the mock guards hazed and brutalized the mock prisoners, some of whom found ways of coping, while others exhibited symptoms of mental breakdown.

The degree of civilization in a society can be judged by entering its prisons. — attributed to Fyodor Dostoevsky, The House of the Dead

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Alexander, M. (2001, August 22). Thirty years later, Stanford Prison Experiment lives on. Stanford Report . Accessed April 22, 2022, from https://news.stanford.edu/news/2001/august22/prison2-822.html?msclkid=7d17df2ec26f11ec8086da6bf715d359

Amdur, R. J. (2006). Provisions for data monitoring. In E. A. Bankert, & J. R. Amdur (Eds.), Institutional review board: Management and function , 2nd edition (pp. 160–165). Jones & Bartlet

Google Scholar  

Banuazizi, A., & Movahedi, S. (1975). Interpersonal dynamics in a simulated prison: A methodological analysis. American Psychologist, 30 , 152–160.

Article   Google Scholar  

Blau, P. M. (1964). Exchange and power in social life . Wiley.

Farkas, M. A. (2000). A typology of correctional officers. International Journal of Offender Therapy and Comparative Criminology, 44 (4), 431–449. https://doi.org/10.1177/0306624X00444003

Festinger, L., Pepitone, A., & Newcombe, T. (1952). Some consequences of deindividuation in a group. Journal of Abnormal and Social Psychology, 47 , 382–389.

French, J. R. P., & Raven, B. (1959). The bases of social power. In D. Cartwright (Ed.), Studies in social power (pp. 150–167). Institute for Social Research.

Frohnmayer, D. (2004, November 30). “Situational ethics, social deception, and lessons of machiavelli” Judge learned hand award Luncheon Oregon chapter of the American Jewish Committee Tuesday . http://president.uoregon.edu/speeches/situationalethics.shtml

Goffman, E. (1961). Asylums. Essays on the social situation of mental patients and other inmates . Doubleday Anchor. http://www.diligio.com/goffman.htm

Gross, B. (2008, Winter/December). Prison violence: Does brutality come with the badge? The Forensic Examiner . http://www.theforensicexaminer.com/archive/winter08/6/

Haney, C., Banks, C., & Zimbardo, P. G. (1973). A study of prisoners and guards in a simulated prison. Naval Research Review, 30 , 4–17.

Lovibond, S. H., Mithiran, & Adams, W. G. (1979). Effects of three experimental prison environments on the behaviour of non-convict volunteer subjects. Australian Psychologist, 14 (3), 273–285.

Maslach, C. (1971). The “truth” about false confessions. The Journal of Personality and Social Psychology, 20 (2), 141–146. https://doi.org/10.1037/h0031675

Maslach, C. (1974). Social and personal bases of individuation. Journal of Personality and Social Psychology, 29 (3), 411–425. https://doi.org/10.1037/h0036031

Maslach, C., Marshall, G., & Zimbardo, P. G. (1972). Hypnotic control of peripheral skin temperature: A case report. Psychophysiology, 9 (6), 600–605. https://doi.org/10.1111/j.1469-8986.1972.tb00769.x

Morgan, A. H., Lovibond, S. H., & Adams, W. G. (1979). Comments on S. H. Lovibond, Mithiran, & W. G. Adams: “The effects of three experimental prison environments on the behaviour of non-convict volunteer subjects”. Australian Psychologist, 14 (3), 273–287.

NHLBI. (2008). National Heart Lung and Blood Institute. Data and safety monitoring policy . http://www.nhlbi.nih.gov/funding/policies/dsmpolicy.htm

O’Toole, K. (1997, January 8). The Stanford prison experiment: Still powerful after all these years. Stanford report . Stanford University News Service. http://www.stanford.edu/news/gif/snewshd.gif

Prescott, C. (2005, April 28). The lie of the Stanford prison experiment. The Stanford Daily .

Sawyer, K. D. (2021). George Jackson, 50 years later . Accessed January 18, 2022, from https://sfbayview.com/2021/08/george-jackson-50-years-later/?msclkid=4afbd2c7c26b11eca875b013aedf20b3

Schaufeli, W. B., & Peeters, M. C. W. (2000). Job stress and burnout among correctional officers: A literature review. International Journal of Stress Management, 7 (1), 19–48. https://doi.org/10.1023/A:1009514731657

Schlesinger Report. (2004). Final report of the independent panel to review Department of Defense Detention Operations . http://news.bbc.co.uk/nol/shared/bsp/hi/pdfs/24_08_04_abughraibreport.pdf

SPE Website. (n.d.). Stanford Prison Experiment Website. The story: An overview of the experiment . Accessed February 28, 2022, from https:// www.prisonexp.org/the-story

Weber, M. (1947). The theory of social and economic organization . Oxford University Press.

Zimbardo, P. (1969). The human choice: Individuation, reason and order versus deindividuation, impulse, and chaos. In W. J. Arnold & D. Levine (Eds.), Nebraska Symposium on Motivation (Vol. 17, pp. 237–307). University of Nebraska Press.

Zimbardo, P. G. (1970). The human choice: Individuation, reason, and order versus deindividuation, impulse, and chaos. In W. J. Arnold & D. Levine (Eds.), 1969 Nebraska symposium on motivation (pp. 237–307). University of Nebraska Press. Accessed January 19, 2022, from https://stacks.stanford.edu/file/gk002bt7757/gk002bt7757.pdf

Zimbardo, P. G. (1971a). Application for institutional approval of research involving human subjects . August, 1971. Available at: http://www.prisonexp.org/pdf/humansubjects.pdf . Accessed December 1, 2023.

Zimbardo, P. G. (1971b). Prison life study: General information sheet . August, 1971. Available at: http://www.prisonexp.org/pdf/geninfo.pdf . Accessed December 1, 2023.

Zimbardo, P. G. (2008). The lucifer effect: Understanding how good people turn evil . Random House.

Zimbardo, P. G., Haney, C., Banks, W. C., & Jaffe, D. (1972). Stanford prison experiment . Philip G. Zimbardo, Inc. (Tape recording).

Zimbardo, P. G., Haney, C., Banks, W. C., & Jaffe, D. (1972, April 8). The mind is a formidable jailer: A Pirandellian prison. New York Times Magazine, Section 6, 36, ff.

Zimbardo, P. G., Marshall, G., & Maslach, C. (1971). Liberating behavior from time-bound control: Expanding the present through hypnosis. Journal of Applied Social Psychology, 1 (4), 305–323. https://doi.org/10.1111/j.1559-1816.1971.tb00369.x

Zimbardo, P. G., Marshall, C., White, G., & Maslach, C. (1973). Objective assessment of hypnotically induced time distortion. Science, 181 (4096), 282–284.

Zimbardo, P. G., Maslach, C., & Haney, C. (2000). Chapter 11: Reflections on the Stanford prison experiment: Genesis, transformations, consequences. In T. Blass (Ed.), Obedience to authority: Current perspectives on the milgram paradigm (pp. 193–237). Lawrence Erlbaum Associates.

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Acknowledgments

I wish to thank Chris Herrera, Jonathan K. Rosen, David Segal and Ruth Spivak for their comments on this chapter.

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Perlstadt, H. (2023). The Stanford Prison Experiment: The Power of the Situation. In: Assessing Social Science Research Ethics and Integrity. Clinical Sociology: Research and Practice. Springer, Cham. https://doi.org/10.1007/978-3-031-34538-8_8

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