John Slabczynski joined the Division on Addiction, Cambridge Health Alliance, a Harvard Medical School teaching hospital in July 2021 as a Research Coordinator. Mr. Slabczynski provides research and administrative support to the Division’s addiction-related projects, including literature and database reviews, analyses, and the development and writing of research materials, technical reports, and manuscripts for publication or presentation. He also provides research and technical support for the development and evaluation of CARS (the Computerized Assessment and Referral System). Mr. Slabczynski is a writer for The BASIS (The Brief Addiction Science Information Source) research blog.

Mr. Slabczynski graduated with a Bachelor of Arts Dual-Degree in Psychology and Sociology from the University of Massachusetts Lowell in 2021.

Current Projects

Assessing Cultures of Recovery in Tribal Communities (NARCH XII)

Responsibility, Research, and Resources: 2024 Plan for Responsible Gambling Activities

Responsible Drinking Extension

Streamlining Computerized Assessment & Referral System (CARS)-5

Selected Publications


Edson, T. C., Louderback, E. R., Tom, M. A., Philander, K. S., Slabczynski, J. M., Lee, T. G. & LaPlante, D. A. (2023). A large-scale prospective study of big wins and their relationship with future involvement and risk among actual online sports bettors. Computers In Human Behavior, 142, 107657.

Edson, T. C., Slabczynski, J. M., Lee, T. G., McAuliffe, W. H. B., & Gray, H. M. (2023). A meta-analytic investigation of problem gambling and self-harm: A causal inference perspective. Psychology of Addictive Behaviors, 37(7), 946–960.

LaPlante, D. A., Lee, T. G., Slabczynski, J. M., Shaffer, H. J., & Gray, H. M. (2023). Five barriers to defining responsible drinking. Addiction Research & Theory, 31(4), 231-238

Nelson, S. E., Slabczynski, J. M., Lee, T. G., & LaPlante, D. A. (2023). All in: A scoping review of the association between gambling and athletic participation. International Gambling Studies. 1–25.


Shaffer, H. J., Gray, H. M., Slabczynski, J. M., Lee, T. G., & LaPlante, D. A. (2022). Stakeholder definitions of responsible drinking: a call to define an ambiguous construct. Addiction Research & Theory, 30(6), 441–447.