description Philip Zimbardo Overview
Philip Zimbardo is an American social psychologist born in 1933, best known for his controversial 1971 Stanford Prison Experiment. The study, which randomly assigned college students to act as guards and prisoners, investigated how situational power dynamics and social roles influence human behavior. The experiment was halted prematurely due to severe ethical concerns and the distress of the participants. Zimbardo later founded the Heroic Imagination Project to teach individuals how to resist negative social pressures.
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What was the Stanford Prison Experiment?
Philip Zimbardo's 1971 study randomly assigned college students to act as prison guards or prisoners in a simulated prison. It examined how assigned roles and situational power could affect behavior.
How long did the Stanford Prison Experiment last?
The study was planned to run for two weeks but was stopped after six days because of escalating distress and concerns about participant welfare. It took place at Stanford University in 1971.
Is the Stanford Prison Experiment accepted as definitive proof of human behavior?
No, the experiment remains highly controversial and later critics challenged its methods and conclusions. Debates have focused on participant expectations, researcher influence, and the meaning of the 1971 results.
What question was Zimbardo trying to study with guards and prisoners?
He wanted to examine whether social roles and institutional settings could change behavior beyond a person's individual personality. The guard and prisoner assignments were the central design feature of the 1971 study.
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