John M. Darley
John M. Darley was an American social psychologist who was professor of psychology and public affairs at Princeton University. He was the son of noted professor of psychology, John G. Darley. He has a Ph.D. from Harvard University in Social Relations.
Darley is best known, in collaboration with Bibb Latané, for theories which explore why people do not always intervene at the scene of an emergency, a research interest largely stemming from the tragic case of Kitty Genovese, the New Yorker who was murdered in a New York suburb in March 1964 in the presence of 38 witnesses. He is also known for Darley's Law, which states that “The more any quantitative performance measure is used to determine an individual’s rewards, the more subject it will be to corruption pressures and the more it will distort the action and thought patterns of those it is intended to monitor.”
