The Stanford prison experiment was a 1971 social psychology experiment that attempted to investigate the psychological effects of perceived power, focusing on the struggle between prisoners and prison officers.
The prisoners were transported to the mock prison from the police station, where they were strip searched and given their new identities.
Male participants were recruited and told they would participate in a two-week prison simulation.
The team selected the 24 applicants whose test results predicted they would be the most psychologically stable and healthy.
The experiment was conducted in a 35-foot (10.5 m) section of a basement of Jordan Hall (Stanford's psychology building).
The prison had two fabricated walls, one at the entrance, and one at the cell wall to block observation.