Read the official Defense Department report on the Abu Ghraib abuses, published in August 2004, particularly Appendix G on the social psychology of abusive behavior and the predictability of abuse in the right social circumstance.

Read an article by Philip Zimbardo about the power of evil posted on the Stanford Prison Experiment website.

Read a May 18, 2007, Time magazine article about Dr. Philip Zimbardo’s role in the Abu Ghraib story.

Read a May 18, 2007, Time magazine article about Dr. Philip Zimbardo’s role in the Abu Ghraib story.

Read an Aug. 28, 2007, Associated Press story about an Army officer acquitted of failing to control U.S. soldiers who abused prisoners at Abu Ghraib in Iraq.

Read a May 8, 2004, San Francisco Chronicle story on how the Stanford Prison Experiment foretold Abu Ghraib.

Read an April 8, 1973, New York Times Magazine article on the Stanford Prison Experiment.

Herbert Kelman is Richard Clarke Cabot Professor of Social Ethics, Emeritus, in the psychology department at Harvard University in Cambridge, Mass., and co-author of Crimes of Obedience: Toward a Social Psychology of Authority and Responsibility.

Arthur G. Miller is a psychology professor at Miami University in Oxford, Ohio, and editor of The Social Psychology of Good and Evil.