
Philip George Zimbardo (/zɪmˈbɑːrdoʊ/; March 23, 1933 – October 14, 2024) was an American psychologist. He was a professor emeritus at Stanford University.
Zimbardo became known for his 1971 Stanford prison experiment. He wrote many introductory psychology books, textbooks for college students, and other notable works, including The Lucifer Effect, The Time Paradox, and The Time Cure. He is also the founder and president of the Heroic Imagination Project.
Zimbardo was born in New York City. He studied at Brooklyn College and later at Yale University. He was married to Christina Maslach. Maslach played a role in ending the Stanford prison experiment.
Zimbardo died at home in San Francisco, California on October 14, 2024, at the age of 91.