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Guards are briefed on the roles they played, and the fact that they could do anything they believe would maintain law and order.
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9 of the student participants are arrested, introduced to the guards, blindfolded and strip searched, then shown to their cells. They were each given a prisoner ID which they would know be known solely as.
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Prisoners rebel, taunting the guards and ribbing off their prisoner ID's.
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A spy student, given prisoner ID 8612 is inserted into the experiment.
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Prisonder 8612 gets let free after having, supposedly, a mental breakdown.
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As an act of rebellion, Prisoner 416 went on a hunger strike. He was placed in 'The Hole'.
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Other prisoners were given dilemas - for example, let prisoner out of the hole, but lose their blankets for the night, or keep things as they are.
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Zimbardo opted to end the experiment after the 'guards' began to show signs of sadistical behaviour, clearly liking the power they possessed. Zimbardo's girlfriend, another Psychologists, also played a role in this decision as she claimed the experiment was morally wrong.
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The experiment is ended, 8 days short, after 6 days. The prisoners showed major signs of depression and stress within the 6 days.
