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• Who conducted the Stanford prison experiment?

  Philip Zimbardo and colleagues
• What was the main purpose of Zimbardo's research?

  To understand prison guard brutality causes
• In what decade was the Stanford prison experiment conducted?

  1970s
• What roles were assigned to the participants in the Stanford prison experiment?

  Prison guard or prisoner
• How many men participated in the Stanford prison experiment?

  21 men
• What was the criteria for selecting participants in the study?

  Emotionally stable student volunteers
• How were the prisoners and guards encouraged to conform to their roles?

  Through uniforms and behavior instructions
• What type of clothing did prisoners wear in the experiment?

  A loose smock and a cap
• How were prisoners identified in the Stanford prison experiment?

  By number, not by name
• What items did the guards have as part of their uniform?

  Wooden club, handcuffs, and mirror shades
• What psychological effect did the uniforms have on participants?

  Created a loss of personal identity
• What was one method used to encourage prisoners to identify with their role?

  Applying for parole instead of leaving
• How did the guards reinforce their power over the prisoners?

  By reminding them of their complete power
• What was the initial reaction of the prisoners to the guards' treatment?

  They rebelled within two days
• What tactics did the guards use during the rebellion?

  They used fire extinguishers to retaliate
• What strategy did the guards employ to control the prisoners?

  Divide-and-rule tactics
• How did the guards remind prisoners of their powerlessness?

  By conducting frequent headcounts
• What was the psychological state of the prisoners after the rebellion was suppressed?

  They became subdued, depressed, and anxious
• What happened to one prisoner who showed psychological disturbance?

  He was released from the study
• What extreme action did one prisoner take during the experiment?

  He went on a hunger strike
• How did the guards respond to the hunger strike?

  They tried to force-feed him
• What did the guards do to punish the hunger-striking prisoner?

  Put him in the 'hole'
• How did the guards' behavior change over the course of the study?

  It became increasingly brutal and aggressive
• What conclusion can be drawn about social roles from the Stanford prison experiment?

  They strongly influence individuals' behavior
• What was Zimbardo's decision regarding the duration of the study?

  He ended it after six days
• How did participants not assigned to roles behave?

  They acted as if they were in a prison