Lucy Napper

My research focuses on responses to health-risk information, attitude and behavior change, and the assessment of health-related cognition and behaviors. My research is grounded in models of social cognition, stages of change, social norms, and self-affirmation theory. I am currently pursuing several related lines of research. Firstly, I explore factors that influence perceptions of health risks and health behaviors. This includes the influence of peers and parents on substance use and sexual risk behaviors of emerging adults. Building on this line of research, I also study the efficacy of interventions aimed at reducing substance use and associated risks, including ways to promote effective parent communication about health risks during emerging adulthood.

My quantitative interests focus on psychometrics, including the development and evaluation of measures related to substance use, mental health, and sexual risk. For example, I am currently working on projects examining the assessment of communication motives and drinking game outcomes.

I have a joint appointment in the Health, Medicine, and Society Program

For more information, please email me at

Selected Publications

  • Hurlocker, M. C., Madson, M. B., Lui, P. P., Dvorak, R., Ham, L. S., Leffingwell, T., Looby, A., Meier, E., Montes, K., Napper, L. E., Prince, M. A., Skewes, M., Zamboanga, B. L., & Harm Reduction Research Team. (in press). Mental health risk profiles and related substance use during coronavirus pandemic among college students who use substances. International Journal of Mental Health.
  • Napper, L. E., Trager, B., Turrisi, R., & LaBrie, J. W. (in press). “Let’s not talk about it”: Parents’ reasons for not discussing alcohol use with emerging adult children. Journal of Adolescent Health.
  • Napper, L. E., Munley-Stone, M., Neely, P. O. (in press). Capturing connections during COVID-19: Using reflective photography to assess US college students’ sense of belonging. Higher Education Research & Development.
  • Wakeel, F., Jia, H., He, L., Shehadeh, K. S., Napper, L. E. (in press). Development and application of a comprehensive measure of access to health services to examine COVID-19 health disparities. Healthcare
  • Wolter, L. C., & Napper, L. E. (in press) (Mis)Perceptions of bystander behaviors and approval: The role of sex-specific perceived norms. Psychology of Violence
  • Zamboanga, B. L., Blumenthal, H., Ramadam, B., Ford, K., Napper, L. E., Hurlocker, M., Madson, M. B., & The Harm Reduction Research Team. (in press). What Pandemic? A multisite study of drinking motives and drinking games participation among college students during a pandemic (COVID-19) academic year. Addictive Behaviors.
  • Napper, L. E., Trager, B., Turrisi, R., & LaBrie, J. W. (2022). Assessing parents’ motives for talking about alcohol with their emerging adult children. Addictive Behaviors, 125, 107155.
  • Earle, A. M., Napper, L. E., LaBrie. J. W., Brooks-Russell, A., Smith, D. J., & de Rutte, J. L. (2020). Examining interactions within the Theory of Planned Behavior in the prediction of intentions to engage in cannabis-related driving behaviors. Journal of American College Health, 68(4), 374-380.
  • Napper, L. E., Wolter, L. C., & Ebersole, D. S. (2020). ‘Mama don’t preach’: Young adults’ perceptions of maternal messages about underage drinking. Journal of Family Communication, 20(2), 160-174.
  • Harris, P. R., Griffin, D. W., Napper, L. E., Bond, R., Schüz, B. Stride, C., Brearley, I. (2019). Individual differences in self-affirmation: Distinguishing self-affirmation from positive self-regard. Self and Identity, 18(6), 589-630. 
  • Montes, K. & Napper, L. E. (2019). An examination of the direct and indirect effects of marijuana identity on marijuana use and consequences. Substance Use and Misuse, 54(8), 1286-1296.
  • Napper, L. E. (2019). Harm-reduction and zero-tolerance maternal messages about college alcohol use. Addictive Behaviors, 89, 136-142.
  • Zamboanga, B., Napper, L. E., George, A., & Olthuis, J. (2019). Examining drinking game harms as a function of gender and college student status. Psychology of Addictive Behaviors, 33(8), 685-696
  • Napper, L. E. (2018). Examining theoretical predictors of (mis)perceived alcohol norms. Journal of Studies on Alcohol and Drugs, 79(3), 474-480.
  • Napper, L. E., & Derby, A. (2018). Longitudinal associations between maternal disclosure of past alcohol use and underage college drinking. Psychology of Addictive Behaviors, 32(3), 301-308. 
  • Cervantes, R. C., Fisher, D. G., Padilla, A. M., & Napper, L. E. (2016). The Hispanic Stress Inventory Version 2: Improving the assessment of acculturation related stress. Psychological Assessment28(5), 506-522. doi: 10.1037/pas0000200
  • LaBrie, J. W., Earle, A.M., Boyle, S.C., Hummer, J.F., Montes, K., Turrisi, R, & Napper, L. E(2016). A parent-based intervention reduces heavy episodic drinking among first-year college students. Psychology of Addictive Behaviors, 30(5), 523-535.
  • Napper, L. E., Froidevaux, N. M., & LaBrie, J. W. (2016). Being blunt about marijuana: Parent communication about marijuana with their emerging adult children. Prevention Science, 17, 882-891.
  • Napper, L. E., Kenney, S. R., Hummer, J. F., Fiorot, S., & LaBrie, J. W. (2016). Longitudinal relationships among perceived injunctive and descriptive norms and marijuana use. Journal of Studies on Alcohol and Drugs77(3), 457-463.
  • Napper, L. E., Montes, K., Kenney, S. R., & LaBrie, J. W. (2016). Assessing the personal negative impacts of hooking up experienced by college students: Gender differences and mental health. Journal of Sex Research53(7), 766-775.  doi: 10.1080/00224499.2015.1065951
  • LaBrie, J. W., Napper, L. E., Grimaldi, E. M., Kenney, S. R., & Lac, A. (2015). The efficacy of a standalone protective behavioral strategies intervention for students accessing mental health services. Prevention Science16(5), 663-673. doi: 10.1007/s11121-015-0549-8
  • Napper, L. E., Hummer, J. F., Chithambo, T. P., & LaBrie, J. W. (2015). Perceived parent and peer marijuana norms: The moderating effect of parental monitoring during college. Prevention Science16, 364-373. doi: 10.1007/s11121-014-0493-z
  • Napper, L. E., Kenney, S. R., & LaBrie, J. W. (2015). The longitudinal relationships among injunctive norms and hooking up attitudes and behaviors in college students. Journal of Sex Research52(5), 499-506. doi: 10.1080/00224499.2014.952809
  • Kenney, S. R., Napper, L. E., Martens, M. P., & LaBrie, J. W. (2014). Examining the efficacy of a brief group protective behavioral strategies skills training intervention with college women. Psychology of Addictive Behaviors, 28(4), 1041-1051. doi: 10.1037/a0038173
  • LaBrie, J. W., Napper, L. E., & Hummer, J. F. (2014). Normative feedback for parents of college students: Piloting a parent based intervention to correct misperceptions of students’ alcohol use and other parents’ approval of drinking. Addictive Behaviors, 39, 107-113. doi: 10.1016/j.addbeh.2013.08.036


lucy napper
Associate Professor
Assistant Director, Health, Medicine, & Society Program
Chandler-Ullmann room 107
The University of Sheffield (United Kingdom), Ph.D. 2005
The University of Sheffield BSc, 2002 Psychology

Teaching Interests: 

Health Psychology
Psychology of Addictive Behaviors
Research Methods and Statistics