The stanford prison experiment consisted of male college students who volunteered to participate in the simulation of a prison. half of the students became guards and the other half prisoners. after only six days, the lead psychologist, had to call off the study because of the guards' degrading behaviors and the way the prisoners became passive, broke down, or rebelled.

The correct answer is Philip Zimbardo. 

In 1971, the psychologist Philip Zimbardo conducted the notorious Stanford Prison experiment to investigate the psychological effects perceived power has on individuals. This study was widely criticized for being unethical, since participants who were "prisoners" were distressed, became passive and helpless due to the nature of the study. 

:what is edwards's purpose for giving this sermon? which elements likely make the argument effective for a puritan audience?