People are born with a balanced amount of good and evil within them. Certain actions or influences can trigger ones good or evil side. This was tested by the psychologist and Stanford professor, Philip Zimbardo. He conducted an experiment in 1973 to test whether the brutality of guards was situational or dispositional, or in other words, whether it was due to the circumstances they were under or simply due to sadistic personalities they possessed. His plan was to use a mock prison in Stanford’s basement