Michelle Stock

Associate Professor of Applied Social Psychology
Room 306
Address: 2125 G St NW
Washington, District Of Columbia


Current Research

Dr. Stock focuses her research on applying social-psychological theories to the study of risky health cognitions and behaviors, including substance use, sexual behaviors, and UV exposure. Her experimental and survey research focuses on the application of dual-processing models, in particular the Prototype-Willingness model (Gibbons, Gerrard, & Lane, 2003), to provide a framework for understanding the cognitive (both heuristic and reasoned) constructs and situational factors that affect health decisions. The research conducted in her lab can be split into three main areas:

1) the relation among risk behavior, social comparison, and perceptions of risk;

2) applying social psychological theory and the Prototype-Willingness model to health interventions;

3) examining the relation between racial discrimination and risky health cognitions and behaviors as well as risk and protective factors that may help explain and that may reduce this relation.


Ph.D. 2007, Iowa State University


Stock, M.L., Gibbons, F.X., Beekman, J.B., & Gerrard, M. (2015). It only takes once: The absent-exempt heuristic and reactions to comparison-based sexual risk information. Journal of Personality and Social Psychology, 109, 39-52.

*Litt, D.M., Stock, M. L., & Gibbons, F. X. (2015). Adolescent Substance Use: Social comparison orientation moderates the impact of friend and sibling behavior. British Journal of Health Psychology, 20, 514-533.

*Walsh, L.A., Stock, M.L., *Peterson, L.M., & Gerrard, M. (2014). Women’s sun protection cognitions in response to UV photography: the role of age, cognition, and affect. Journal of Behavioral Medicine, 37, 553-563. doi: 10.1007/s12160-009-9151-2

Stock, M.L., *Litt, D.M., *Arlt, V., *Peterson, L.M., & *Sommerville, J. (2013). The Prototype/Willingness model, academic versus health-risk information, and risk cognitions associated with nonmedical prescription stimulant use among college students. British Journal of Health Psychology, 18, 490-507. doi: 10.1111/j.2044-8287.2012.02087.x

Stock, M.L., Gibbons, F.X., Peterson, L.M., & Gerrard, M. (2013). The effects of racial discrimination on the HIV-risk cognitions and behaviors of Black adolescents and young adults. Health Psychology, 32, 543-550. doi: 10.1037/a0028815

Stock, M.L., Gibbons, F.X., Gerrard, M., Houlihan, A. E., Weng, C, Lorenz, F.O., & Simons, R.L. (2013). Racial identification, racial composition, and substance use vulnerability among African American adolescents and young adults. Health Psychology, 32, 237-247. doi: 10.1037/a0030149

Gerrard, M., Stock, M.L., Roberts, M., Gibbons, F.X. & O’Hara, R.E., Weng, C-Y, & Wills, T.A. (2012). Coping with racial discrimination: the role of substance use. Psychology of Addictive Behaviors, 26, 550-560. doi: 10.1037/a0027711

*current or former student