LEONARD A. JASON, Ph.D, is Professor of Psychology at DePaul University, in Chicago, where he heads the Center for Community Research. He has published more than 350 articles and has edited or authored 14 books. He has been a member of the editorial boards for seven peer-reviewed psychology journals, has served on review committees of the National Institute of Drug Abuse and the National Institute of Mental Health, and has received more than $16 million in federal grants to support his research. He is former president of the Division of Community Psychology of the American Psychological Associ...