Does religion have the power to regulate human behavior? If so, under what conditions can it prevent crime, delinquency, suicide, alcoholism, drug abuse, or joining cults? Despite the fact that ordinary citizens assume religion deters deviant behavior, there has been little systematic scientific research on these crucial questions. This book is the first comprehensive analysis, drawing on a wide range of historical and contemporary data, and written in a style that will appeal to readers from many intellectual backgrounds.