a simulated prison was set up in the basement of stanford university, consisting of three cells with steel bar doors, a yard area, a guardroom and a closet for solitary confinement. there was also a room with video recording equipment to record transactions between the participants throughout the proposed 2-week experiment. the guards were briefed before and asked to maintain order but not given specific instructions. they were dressed in military-style uniforms and given batons. the prisoners were arrested by real officers at their homes and taken to the police station to be processed. then, they were blindfolded and driven to stanford university where they were stripped and deloused. each prisoner was given a muslin smock to wear, labelled with their prisoner identification number that they were referred to for the rest of the study. they spent a lot of time in their cells, but were allowed privileges, such as watching a movie and visits from their family. three guards worked 8-hour shifts an conducted a 'prisoner count' at the start of every shift, lining up the prisoners who then recited their number.