Michael S. Dunbar

Michael S. Dunbar

Behavioral Scientist


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Michael Dunbar (he/him) is a behavioral scientist at RAND. His research examines the ways in which situational factors and policy environments influence patterns of health behaviors, like nicotine and tobacco use, as well as health service utilization. Dunbar's work employs a range of methodologies and study designs, including experimental research, semi-structured interviews, surveys, and ecological momentary assessment. His current studies focus on topics such as understanding the effects of tobacco advertising at retail point-of-sale on adolescent smoking susceptibility; examining longitudinal patterns of nicotine and cannabis vaping product use in young adults; and evaluating programs aimed at increasing access to behavioral health services in underserved populations. Dunbar received his Ph.D. in clinical and health psychology from the University of Pittsburgh.


Ph.D. in clinical and health psychology, University of Pittsburgh; M.S. in clinical and health psychology, University of Pittsburgh; B.S. in psychology, University of Pittsburgh

Selected Work

  • Dunbar, M. S., Siconolfi, D., Rodriguez, A., Seelam, R., Davis, J. P., Tucker, J. S., & D'Amico, E. J., "Alcohol use and cannabis use trajectories and sexual/gender minority disparities in young adulthood," Psychology of Addictive Behaviors, 36(5), 2022
  • Dunbar, M. S., Nicosia, N., & Kilmer, B., "Exposure to new smoking environments and individual-level cigarette smoking behavior: Insights from exogenous assignment of military personnel," Social Science & Medicine, 280, 2021
  • Dunbar, M.S., Seelam, R., Tucker, J. S., Rodriguez, A., Shih, R., & D’Amico, E. J., "Correlates of awareness and use of heated tobacco products in a sample of U.S. young adults in 2018–2019," Nicotine & Tobacco Research, 22(12), 2020
  • Dunbar, M. S., Schultz, D., Chan, W. Y., Abbott, M., & Towe, V. L. "How C2C Transformed Organizational Culture and Approaches to Client Care Coordination," in RAND, Mental Health Task-Shifting in Community-Based Organizations: Implementation, Impact, and Cost — Evaluation of the Connections to Care Program, RAND Corporation (RR-3083-MFANYC), 2020
  • Dunbar, M.S,. Davis, J. P., Rodriguez, A., Tucker, J. S., Seelam, R., & D'Amico, E. J., "Disentangling within- and between-person effects of shared risk factors on e-cigarette and cigarette use trajectories from late adolescence to young adulthood," Nicotine & Tobacco Research, 21(10), 2019
  • Dunbar, M. S., Sontag-Padilla, L., Seelam, R., Kase, C. A., & Stein, B. D., "Unmet mental health treatment need and attitudes toward online mental health services in community college students," Psychiatric Services, 69(5), 2018
  • Dunbar, M.S., Sontag-Padilla, L., Ramchand, R., Seelam, R., & Stein, B.D., "Mental health service utilization among lesbian, gay, bisexual, and queer or questioning college students," Journal of Adolescent Health, 61(3), 2017
  • Dunbar, M. S., Shadel, W. G., Tucker, J. S., & Edelen, M. O., "Use of and reasons for using multiple other tobacco products in daily and nondaily smokers: associations with cigarette consumption and nicotine dependence," Drug and Alcohol Dependence, 168, 2016

Authored by Michael S. Dunbar

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