Set up a mock prison in the basement of Stanford university.
Observational study- controlled, participant, overt
Emotionally stable volunteers were assigned to the roles of either prisoner or guard.
Prisoners ‘arrested‘, blindfolded, strip searched
Guards given a night stick, dark glasses, uniform and told to maintain order
Prisoners’ daily routine, regulated by guards working in shifts
Dehumanisation of prisoners e.g numbered smocks
Study was planned to run for 2 weeks but stoped early.