Slides Lecture on Stanford Prison Experiment and the Milgram Obedience Experiment, Slides of Psychology

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Giovanni Viviani

Stanford Prison Experiment

What happens when experiments are misplanned

Giovanni Viviani

Stanford Prison Experiment

Why do we need ethics standards in research

Often related to Abu Ghraib prison scandal One of the most criticised experiment of history Conducted at Stanford University, August 1971, by professor Philip Zimbardo Study of psychological effect of becoming a prisoner or a prison guard

Stanford Prison Experiment

More than 50 researchers observed the experiment The experiment was planned to last for 2 weeks Participants were divided in 2 groups, prisoners and prison guards, arbitrarily assigned by Zimbardo 24 males participants, chosen to exclude those with a criminal background

Stanford Prison Experiment

Prisoners were strip searched, chained, assigned a number and closed in their cells Prisoners were then transferred to a mockup prison in the basement of Jordan Hall Prisoners were brought to the police station to take fingerprints and mug shots Real policemen were involved to arrest the prisoners Guards were given wooden batons, a uniform and mirrored sunglasses

https://www.youtube.com/watch?v=x3wxEmHqVCY

Additionally, he was offered to become an informer for the guard in exchange of for no further harassment The researched decided that he was just trying to fool them and told him it was not possible to quit He showed acute emotional disturbance, disorganised thinking, uncontrollable crying and rage During the second day, Prisoner #8612 started breaking down

https://www.youtube.com/watch?v=gbDy4ZtB2fU

Zimbardo gets angry at him because he was dealing with a prison break This student ask Zimbardo a simple question: "What is the independent variable in this study?" #8612 doesn't shows up, but instead a student shows up because he heard they were running an experiment The rumor turns out to be just a rumor, so the guard react by increasing harassment toward prisoners

Prisoner #819 refused initially. He was feeling sick, had refused to eat and wanted to see a doctor All the prisoners answer him that the only way they have to get out of there is through a lawyer to get a parole Zimbardo decides to invite a priest to talk with the prisoners He was later convinced to talk with the priest, but broke down completely and Zimbardo decided to release him.

Most of the prisoners declared to be ready to forfeit their compensation in order to get parole, even though they could have simply quit the experiment. The following day, a Parole Board is organised. The board is mostly composed by graduate students

https://www.youtube.com/watch?v=uczcm1RGlPg

Zimbardo thought untill the end that the experiment was running fine and there was no problem Of the 50 researchers that were supervising the experiment, no one had question its morality No consent form was signed by the participants. Zimbardo justification is that it was impossible to predict what would have happened

Participants playing the role of prisoners were not protected from psychological and physical harm Four participants had to leave after showing signs of emotional disorder that could have had lasting consequences Zimbardo had access to all videos and data and was able to publish his result without being questioned on them