To investigate the extent to which people would conform to the roles in a role-playing simulation of prison life.
PROCEDURE
The Stanford Prison study - A mock prison at Stanford University USA.
Controlled participant observation
24 male students from a volunteer sample.
All volunteers were psychologically and physically screened.
Participants were randomly allocated to either the role of prisoner or guard.
FINDINGS
Dehumanisation was apparent as the guards began to humiliate the prisoners and made them clean the toilets with their bare hands.
Deindividualisation was noticeable by the prisoners referring to each other and themselves by their prison numbers instead of their names
Guards, prisoners and researchers all conformed to their social roles within the prison
Strength
Real Life Example – Zimbardo argues that the same conformity to social role effect that was present in Abu Ghraib, a military prison in Iraq notorious for the torture and abuse of Iraq prisoners by US soldiers in 2003/2004
Limitation
Ethical Issues - A major problem with the procedure of Zimbardo’s study are the ethical issues that it raised. Ethical issue arose due to Zimbardo’s dual role and participants were not protected from psychological harm.