Student Resources History and Biographies The Most Famous Social Psychology Experiments Ever Performed By Kendra Cherry, MSEd Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book." Learn about our editorial process Updated on November 14, 2023 Fact checked Verywell Mind content is rigorously reviewed by a team of qualified and experienced fact checkers. Fact checkers review articles for factual accuracy, relevance, and timeliness. We rely on the most current and reputable sources, which are cited in the text and listed at the bottom of each article. Content is fact checked after it has been edited and before publication. Learn more. by Emily Swaim Fact checked by Emily Swaim Emily is a board-certified science editor who has worked with top digital publishing brands like Voices for Biodiversity, Study.com, GoodTherapy, Vox, and Verywell. Learn about our editorial process Print Trending Videos Close this video player Social experiments often seek to answer questions about how people behave in groups or how the presence of others impacts individual behavior. Over the years, social psychologists have explored these questions by conducting experiments. The results of some of the most famous social psychology experiments remain relevant (and often quite controversial) today. Such experiments give us valuable information about human behavior and how group influence can impact our actions in social situations. At a Glance Some of the most famous social psychology experiments include Asch's conformity experiments, Bandura's Bobo doll experiments, the Stanford prison experiment, and Milgram's obedience experiments. Some of these studies are quite controversial for various reasons, including how they were conducted, serious ethical concerns, and what their results suggested. 1 The Asch Conformity Experiments Doug Corrance. / Getty Images What do you do when you know you're right but the rest of the group disagrees with you? Do you bow to group pressure? In a series of famous experiments conducted during the 1950s, psychologist Solomon Asch demonstrated that people would give the wrong answer on a test to fit in with the rest of the group. In Asch's famous conformity experiments, people were shown a line and then asked to select a line of a matching length from a group of three. Asch also placed confederates in the group who would intentionally choose the wrong lines. The results revealed that when other people picked the wrong line, participants were likely to conform and give the same answers as the rest of the group. What the Results Revealed While we might like to believe that we would resist group pressure (especially when we know the group is wrong), Asch's results revealed that people are surprisingly susceptible to conformity. Not only did Asch's experiment teach us a great deal about the power of conformity, but it also inspired a whole host of additional research on how people conform and obey, including Milgram's infamous obedience experiments. 2 The Bobo Doll Experiment Does watching violence on television cause children to behave more aggressively? In a series of experiments conducted during the early 1960s, psychologist Albert Bandura set out to investigate the impact of observed aggression on children's behavior. In his Bobo doll experiments, children would watch an adult interacting with a Bobo doll. In one condition, the adult model behaved passively toward the doll, but in another, the adult would kick, punch, strike, and yell at the doll. The results revealed that children who watched the adult model behave violently toward the doll were likelier to imitate the aggressive behavior later on. The Impact of Bandura's Social Psychology Experiment The debate over the degree to which violence on television, movies, gaming, and other media influences children's behavior continues to rage on today, so it perhaps comes as no surprise that Bandura's findings are still so relevant. The experiment has also helped inspire hundreds of additional studies exploring the impacts of observed aggression and violence. Research Areas in Social Psychology 3 The Stanford Prison Experiment During the early 1970s, Philip Zimbardo set up a fake prison in the basement of the Stanford Psychology Department, recruited participants to play prisoners and guards, and played the role of the prison warden. The experiment was designed to look at the effect that a prison environment would have on behavior, but it quickly became one of the most famous and controversial experiments of all time. Results of the Stanford Prison Experiment The Stanford prison experiment was initially slated to last a full two weeks. It ended after just six days. Why? Because the participants became so enmeshed in their assumed roles, the guards became almost sadistically abusive, and the prisoners became anxious, depressed, and emotionally disturbed. While the Stanford prison experiment was designed to look at prison behavior, it has since become an emblem of how powerfully people are influenced by situations. Ethical Concerns Part of the notoriety stems from the study's treatment of the participants. The subjects were placed in a situation that created considerable psychological distress. So much so that the study had to be halted less than halfway through the experiment. The study has long been upheld as an example of how people yield to the situation, but critics have suggested that the participants' behavior may have been unduly influenced by Zimbardo himself in his capacity as the mock prison's "warden." Recent Criticisms The Stanford prison experiment has long been controversial due to the serious ethical concerns of the research, but more recent evidence casts serious doubts on the study's scientific merits. An examination of study records indicates participants faked their behavior to either get out of the experiment or "help" prove the researcher's hypothesis. The experimenters also appear to have encouraged certain behaviors to help foster more abusive behavior. 4 The Milgram Experiments Following the trial of Adolph Eichmann for war crimes committed during World War II, psychologist Stanley Milgram wanted to better understand why people obey. "Could it be that Eichmann and his million accomplices in the Holocaust were just following orders? Could we call them all accomplices?" Milgram wondered. The results of Milgram's controversial obedience experiments were astonishing and continue to be both thought-provoking and controversial today. What the Social Psychology Experiment Involved The study involved ordering participants to deliver increasingly painful shocks to another person. While the victim was simply a confederate pretending to be injured, the participants fully believed that they were giving electrical shocks to the other person. Even when the victim was protesting or complaining of a heart condition, 65% of the participants continued to deliver painful, possibly fatal shocks on the experimenter's orders. Obviously, no one wants to believe that they are capable of inflicting pain or torture on another human being simply on the orders of an authority figure. The results of the obedience experiments are disturbing because they reveal that people are much more obedient than they may believe. Controversy and Recent Criticisms The study is also controversial because it suffers from ethical concerns, primarily the psychological distress it created for the participants. More recent findings suggest that other problems question the study's findings. Some participants were coerced into continuing against their wishes. Many participants appeared to have guessed that the learner was faking their responses, and other variations showed that many participants refused to continue the shocks. Major Branches of Psychology What This Means For You There are many interesting and famous social psychology experiments that can reveal a lot about our understanding of social behavior and influence. However, it is important to be aware of the controversies, limitations, and criticisms of these studies. More recent research may reflect differing results. In some cases, the re-evaluation of classic studies has revealed serious ethical and methodological flaws that call the results into question. 7 Sources Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Jeon, HL. The environmental factor within the Solomon Asch Line Test. International Journal of Social Science and Humanity. 2014;4(4):264-268. doi:10.7763/IJSSH.2014.V4.360 Bandura and Bobo. Association for Psychological Science. Zimbardo, G. The Stanford Prison Experiment: a simulation study on the psychology of imprisonment. Le Texier T. Debunking the Stanford Prison Experiment. Am Psychol. 2019;74(7):823-839. doi:10.1037/amp0000401 Blum B. The lifespan of a lie. Medium. Baker PC. Electric Schlock: Did Stanley Milgram's famous obedience experiments prove anything? Pacific Standard. Perry G. Deception and illusion in Milgram's accounts of the obedience experiments. Theory Appl Ethics. 2013;2(2):79-92. By Kendra Cherry, MSEd Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book." See Our Editorial Process Meet Our Review Board Share Feedback Was this page helpful? Thanks for your feedback! What is your feedback? Helpful Report an Error Other Submit