Philip Zimbardo was a psychologist in America during the 1900's. He is best known for the Stanford Prison experiment which he conducted this experiment to study the effects of social roles on an individual's behavior. He was interested in determining whether the brutality among prisoners and guards was brought on by the aggressive personality of the guards or because of the demeaning environment that the prisoners' were in. In order to do so, he created a prison simulation where he assigned participants to the role of guard or prisoner. In an effort to make the experience as close to real life as possible, Zimbardo gave the guards uniforms and batons. He also had the prisoners arrested from their homes and were later fingerprinted, photographed,
