Why Did Philip Zimbardo Discontinue His Classic Experiment That Involved

Multiple Choice

Why did Philip Zimbardo discontinue his classic experiment that involved students' playing the roles of prisoners and guards?

A) Students could not visualize themselves as "guards" or do the work expected of them.
B) The behavior of the "guards" became brutal and the "inmates" lost their self esteem.
C) The concept of the project was a major ethics violation.
D) The project was too conservative for the liberal political views of the campus where it took place.