on the effects of alcohol advertising on the drinking beliefs and behaviors of children and adolescents, and a longitudinal study on the effects of exposure to sexuality in the media on adolescents’ sexual risk taking.

Bonnie L. Halpern-Felsher is an associate professor in the Division of Adolescent Medicine, Department of Pediatrics at the University of California, San Francisco (UCSF). She is also a faculty member at UCSF’s Psychology and Medicine Postdoctoral Program, the Center for Health and Community, and the Comprehensive Cancer Center. She is a developmental psychologist whose research has focused on health-related decision making, perceptions of risk and vulnerability, and health communication. She has also conducted research on the relationships among parenting practices, peer relationships, adolescents’ self-perceptions, and risky behavior. She has served as a consultant to a number of community-level adolescent health promotion programs and has been an active member on several national campaigns to understand and reduce adolescent risk behavior.

William B. Hansen has been president of Tanglewood Research since 1993. He received an honors B.A. degree from the University of Utah and M.S. and Ph.D. degrees in social psychology from the University of Houston. He has served on the faculty at UCLA (1978-1984), the University of Southern California (1980-1989), and Bowman Gray School of Medicine (1989-1996). A widely recognized expert in alcohol and drug prevention, he has written numerous curricula for school and community-based prevention, including Project SMART, Project STAR, and All Stars. He has authored more than 80 articles in scientific journals on research and evaluation methods, prevention theory, and strategies for successful prevention practice. The goal of his research has been to identify and evaluate evidence-based approaches to prevention that can achieve reductions in the onset of use and that can be applied in everyday settings. He has been the principal investigator on major studies to test norm setting and refusal skills strategies for preventing the onset of alcohol use and the development of alcohol problems among young adolescents, the basis of common alcohol and drug abuse education efforts, and projects designed to translate knowledge about prevention into practice. He has been an adviser to the U.S. Office of Technology Assessment, the U.S. Department of Education, the National Institute on Drug Abuse, the Center for Substance Abuse Prevention, numerous state agencies, numerous foundations, the United Nations, the Swiss, Spanish, Mexican, and Portuguese Departments of Health, and the U.S. Information Agency.

Denise Herd is associate professor of behavioral sciences in the Division of Health and Social Behavior of the School of Public Health at the University of California, Berkeley. Her research focuses on drinking and drug use patterns and problems, images of alcohol and violence in rap music, activism regarding local alcohol policy in African American commu-