What were the reasons for Zimbardo’s experiment ending early? The Stanford Prison Experiment Zimbardo et al (1973) What happened to the prisoners when they arrived at the prison? What conclusions can be drawn about conformity to social roles from this experiment? What Instructions were they given? Guards: Prisoners: Evaluate this experiment (State, describe and explain 1 x positive and 1 x negative methodological evaluation points of this research) What did the guards wear and what affect may this have had? List some of the behaviours exhibited? Guards: Prisoners: