About the Authors Jalie A. Tucker, Ph D, MPH, is Professor and Chair of the Department of Health Behavior in the School of Public Health at the University of Alabama at Birmingham (UAB) and directs the UAB Addictive Behaviors and Health Studies group. She earned a doctorate in clinical psychology in 1979 (Vanderbilt University) and an MPH in health care organization and policy in 1998 (UAB). Dr. Tucker”s research interests include the behavioral economics of substance misuse, help-seeking, and behavior change, including how positive change occurs with and without clinical treatment. Dr. Tucker has authored or coauthored numerous journal articles and book chapters and has been a coeditor of two books, including Changing Additive Behavior: Bridging Clinical and Public Health Strategies (1999). She is a past president of the Division on Addictions (50) of the American Psychological Association (APA), a past member and chair of the APA Board of Professional Affairs, and a four-term APA Council of Representatives member.Diane M. Grimley, Ph D, is Professor in the Department of Health Behavior in the School of Public Health at the University of Alabama at Birmingham. She earned a doctorate in health psychology in 1994 (University of Rhode Island). Dr. Grimley”s research interests include STD/HIV and other reproductive health issues, multiple health risk behaviors, and theory-based, technology-delivered behavioral interventions. Dr. Grimley has authored or coauthored numerous journal articles and has served on the editorial board of AIDS and Behavior. She is currently on the editorial board of Sexually Transmitted Diseases and the American Journal of Health Behavior. She also serves on the Advisory Board of Public Health Reports, published by the American Schools of Public Health (ASPH).