Zimbarda prison Experiment
1. Guards treated prisoners harshly, especially after dealing with an attempted rebellion
2. Guards acted in tyrannical, abusive ways e.g. simulate sexual acts or make prisoners clean toilets with their bare hands
3. Prisoners became more passive and accepting of their situation
4. 90% of prisoner conversations were about prison conditions, prisoners became more depressed
5. Study stopped by Zimbardo's girlfriend after 6 days