Adrian Raine is the Richard Perry University Professor of Criminology, Psychiatry, and Psychology at the University of Pennsylvania, and a leading authority on the biology of violence. After leaving secondary school to become an airline accountant, he abandoned his financial career and spent four years as a prison psychologist to understand why some individuals become violent psychopaths while others do not.

Boston Bombers

The roots of the murderously violent behavior of the Tsarnaev brothers are likely biological as well as social. Adrian Raine, author of The Anatomy of Violence, on what groundbreaking neurocriminology reveals about the brains of the Boston bombers.