Add Yahoo as a preferred source to see more of our stories on Google. Philip Zimbardo in 2002 - Carlos Avila Gonzalez/The San Francisco Chronicle via Getty Images Philip Zimbardo, who has died aged 91 ...

SAN FRANCISCO — Philip G. Zimbardo, the psychologist behind the controversial “Stanford Prison Experiment” that was intended to examine the psychological experiences of imprisonment, has died. He was ...

The Stanford Prison Experiment of 1971 is one of the most famous – and infamous – psychological experiments conducted, still discussed in classrooms and pop culture more than half a century on. But ...