Philip George Zimbardo (born March 23, 1933) is an American psychologist and a professor emeritus at Stanford University. He is president of the Heroic Imagination Project. He is known for his Stanford prison study and authorship of various introductory psychology books and textbooks for college students, including [amazon_link id=”0812974441″ target=”_blank” ]The Lucifer Effect[/amazon_link] and [amazon_link id=”1416541993″ target=”_blank” ]The Time Paradox[/amazon_link].