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John D. Clapp

Lenore Stein-Wood and William S. Wood Professor of School Behavioral Health

Internationally recognized researcher and expert on alcohol problem prevention.

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John D. Clapp
Rank:  Tenure Track Faculty

John D. Clapp

Lenore Stein-Wood and William S. Wood Professor of School Behavioral Health

Internationally recognized researcher and expert on alcohol problem prevention.

Media Contact


John D. Clapp is a professor at the Suzanne Dworak-Peck School of Social Work at the University of Southern California. Professor Clapp is known internationally for his research and translational work in the field of alcohol problem prevention. A fellow in the American Academy of Health Behavior, he is currently studying the system dynamics of drinking events with a team of engineers and computer scientists with the goal of developing “smart” real-time prevention applications.
He has published more than 100 journal articles, with his work appearing in the Journal of Studies on Alcohol and Drugs, Addiction, Drug and Alcohol Dependence, among numerous other top research journals. Professor Clapp has been awarded more than $32 million in grants and contracts (NIAAA, NIDA, U.S. Department of Education, Conrad N. Hilton Foundation) and has been principal investigator on over 20 funded projects. Clapp was the founding co-editor-in-chief of the International Journal of Alcohol and Drug Research. As a leader in the prevention of alcohol-related problems experienced by college students, he served six years as the director of the Higher Education Center for Alcohol and Drug Misuse Prevention and Recovery. He also served on the Substance Abuse and Mental Health Services Administration’s Center for Substance Abuse Prevention National Advisory Council.
Professor Clapp’s work and expertise has been featured in numerous international media outlets, with coverage in The New York Times, The Washington Post, The Daily Telegraph, ABC National News, among numerous others,
To reference the work of John Clapp online, we ask that you directly quote their work where possible and attribute it to "John Clapp, a faculty at the USC Suzanne Dworak-Peck School of Social Work” (LINK:


The Ohio State University

PhD 1995

San Diego State University

MSW 1991

San Diego State University

BA 1987

Area of Expertise

  • Alcohol Addiction
  • Social Science Methodology
  • Public Health
  • Social Work
  • Substance Abuse
  • Research Management
  • Alcohol and Drug Epidemiology and Prevention
  • Systems Science

Industry Experience

  • Mental Health Care
  • Education/Learning
  • Research
  • Health and Wellness

Research Interest

Substance Abuse


  • The American Academy of Health Behavior: Fellow and former Board Member
  • The U.S. Center for Substance Abuse Prevention: Advisor, 2013 - 2015
  • Fellow, American Academy of Social Work and Social Welfare


2018 Research Laureate

American Academy of Health Behavior
Recognized at the 18th Annual AAHB Scientific Meeting, "An Equity Approach to Health Behavior Innovations."

Articles & Publications

Clapp, J. D., Madden, D. R., & Pakdaman, S. (2022). Drinking with friends: Measuring the two-week ecology of drinking behaviors. American Journal of Health Behavior, 46(2), 96-113.

Kelley-Quon, L. I., Cho, J., Barrington-Trimis, J., Kipke, M. K., Clapp, J. D., Krueger, E. A., & Leventhal, A. M. (2022). Longitudinal trajectories of prescription opioid misuse in adolescents. Drug and Alcohol Dependence, 236, Article 109470.

Pedersen, E., Davis, J. P., Setodji, C., Dworkin, E. R., Leamon, I., Hummer, J. F., Zutshi, R., & Clapp, J. D. (2022). Increased risk for sexual violence victimization on drinking days involving pregaming. Journal of Aggression, Maltreatment & Trauma. Advance online publication, April 12, 2022.

Pedersen, E. R., Hummer, J. F., Davis, J. P., Fitzke, R. E., Christie, N. C., Witkiewitz, K., & Clapp, J. D. (2022). A mobile-based pregaming drinking prevention intervention for college students: Study protocol for a randomized controlled trial. Addiction Science & Clinical Practice, 17, Article 31.


  • Keynote
  • Moderator
  • Panelist