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Philip Zimbardo's Birthday
Born in New York City -
Completed his BA from Brooklyn College
Has a tiple major in psychology, sociology & anthropology. -
Completed his masters in Yale University
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Completed his Ph.D from Yale University
in psychology -
Taught in Yale for 1 year after Ph.D
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Professor of psychology in NYU for 7 years
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Taught in Columbia University for 1 year
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Joined the faculty at Stanford University
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Accepted a tenure position as professor of psychology at Stanford University
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Start of Prison experiment
There were 12 participants and 3 of them were selecteds to potray role of guards and 9 of them to become prisoners, they were paid $15 per day.
The simulated prison included three six by nine foot prison cells. Each cell held three prisoners and included three cots. -
Prisoners awakened by guard at 2:30am
Findings: Within a very short time both guards and prisoners were settling into their new roles, the guards adopting theirs quickly and easily.
Within hours of beginning the experiment some guards began to harass prisoners. They behaved in a brutal and sadistic manner, apparently enjoying it. Other guards joined in, and other prisoners were also tormented. -
Second day of experiment
On the second day the prisoners in Cell 1 blockaded their cell door with their beds and took off their stocking caps, refusing to come out or follow the guards' instructions. Guards subsequently attacked the prisoners with fire extinguishers without being supervised by the research staff. Finding that handling nine cell mates with only three guards per shift was challenging, one of the guards suggested that they use psychological tactics to control them -
New Prisoner admitted
Prisoner No. 416, a newly admitted stand-by prisoner, expressed concern over the treatment of the other prisoners. The guards responded with more abuse. When he refused to eat his sausages, saying he was on a hunger strike, guards confined him to "solitary confinement", a dark closet: "the guards then instructed the other prisoners to repeatedly punch on the door while shouting at 416 -
Fourth Day of Prison Experiment
On the fourth day, some of the guards stated that they heard a rumor that the released prisoner was going to come back with his friends and free the remaining inmates. Zimbardo and the guards disassembled the prison and moved it onto a different floor of the building. Zimbardo waited in the basement, in case the released prisoner showed up, and planned to tell him that the experiment had been terminated. The released prisoner never returned, and the prison was rebuilt in the basement once again -
3 more prisoners set free
Within the next few days three others also had to leave after showing signs of emotional disorder that could have had lasting consequences. (These were people who had been pronounced stable and normal a short while before.) -
End of Prison experiment after only 6 days
There was real danger that someone might be physically or mentally damaged if it was allowed to run on.Most of the guards were upset when the experiment concluded after only 6 days. Zimbardo announced the end of the experiment to the participants. The results of the experiment have been argued to demonstrate the impressionability and obedience of people when provided with a legitimizing ideology and social and institutional support. -
First prisoner to be set free
One prisoner #8612 then began to act crazy, to scream, to curse, to go into a rage that seemed out of control had to be released after 36 hours.His thinking became disorganized and he appeared to be entering the early stages of a deep depression. -
Suposed End of Prison experiment
Zimbardo had intended that the experiment should run for a fortnight, but on the sixth day he closed it down.
