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 91.

Stanford University says the psychologist behind the controversial “Stanford Prison Experiment” has died SAN FRANCISCO -- Philip G. Zimbardo, the psychologist behind the controversial ...

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 91.

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

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

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 91. Stanford ...