In my research, I examine the way peers affect each other’s motivation, achievement, and behavior, with the goal of understanding the social-psychological mechanisms underlying these processes and developing practical strategies to ensure that peers promote rather than inhibit each other’s success.

  • - Costs and benefits of cooperative learning as a universal school-based approach to adolescent substance use prevention. Journal of Community Psychology.

  • - A 2 × 2 model of sociocognitive conflict regulation. Journal of Experimental Social Psychology.

  • - The longitudinal relationship between peer relations and empathy and their joint contribution to reducing bullying in middle school: Findings from a randomized trial of cooperative learning. Journal of Prevention and Health Promotion.

  • - Reconsidering Jigsaw social psychology. Journal of Educational Psychology.

  • - Enlisting peer cooperation in the service of alcohol use prevention in middle school. Child Development.