1. Ying-Chih Chuang is assistant professor in the Graduate Institute of Public Health at Taipei Medical University, Taiwan. She is primarily interested in contextual influences on health, theoretical and methodological issues concerning health behaviors, minority health, and adolescent health risk behaviors. Her current research utilizes multilevel methods to assess the relationship between residential context and personal health behaviors.
2. Susan T. Ennett is associate professor in the Department of Health Behavior and Health Education in the School of Public Health at the University of North Carolina at Chapel Hill. Her research addresses the social contexts for substance use and other health risk behaviors among adolescents, as well as evaluation of programs intended to prevent or reduce youth health risk behaviors.
3. Karl E. Bauman is professor in the Department of Health Behavior and Health Education in the School of Public Health at the University of North Carolina at Chapel Hill, senior research sociologist at RTI International, and senior research scientist at Pacific Institute for Research and Evaluation. His research interests are the etiology of adolescent substance use and dating violence and the evaluation of programs designed to influence those behaviors.
4. Vangie A. Foshee is associate professor in the Department of Health Behavior and Health Education in the School of Public Health at the University of North Carolina at Chapel Hill. Her research focus is on adolescent problem behaviors and includes both etiological and evaluation research.