Principal Investigator

Elizabeth Raposa, Ph.D.

Dr. Liz Raposa is an Assistant Professor in the Department of Psychology at the College of William and Mary. She was an undergraduate double major in Psychology and Comparative Literature at the University of Pennsylvania. She received her Ph.D. in Clinical Psychology from the University of California, Los Angeles, where she studied how early life adversity influences psychosocial and biological development in ways that create risk for poor mental and physical health. After completing her pre-doctoral internship in the Dialectical Behavior Therapy Program at Yale-New Haven Hospital, she took a postdoctoral fellowship as a MacArthur Foundation Network Fellow at the University of Massachusetts, Boston.

Dr. Raposa joined the faculty at William and Mary as a licensed clinical psychologist in Fall 2016. Her research investigates how early life stressors influence trajectories of development, and how close relationships with parents, peers, or others might mitigate the negative impact of early stressors on youth. In particular, Dr. Raposa has recently conducted several studies examining adult-youth mentoring relationships as one protective factor for youth growing up in high-stress environments. Dr. Raposa teachers undergraduate courses on Abnormal Psychology (PSYC 318), Behavior Modification (PSYC 422), and Health Psychology (PSYC 356), as well as a master’s level course on Clinical Psychology (PSYC 668). She also supervises undergraduate research (PSYC 491) and directed reading courses (PSYC 490). In addition to her work as a professor at William and Mary, Dr. Raposa enjoys reading, playing tennis, and hiking with her dog, Barkley.


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Graduate Students

Current M.A. Students

Ti Hsu

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Ti’s research interests involve cultural influences on developmental processes and outcomes, especially mood (i.e., anxiety and depression) and externalizing disorders in childhood and adolescence. At W&M, her current research focuses on the effects of stress and negative affect on the eating behavior of adolescents, as well as the possible role of fear as a factor in early- and adolescent-onset conduct disorders. She hopes to ultimately examine these same factors in international adolescent populations in order to delineate the effects of culture on the risk factors that contribute to socio-emotional and psychiatric outcomes in adolescents.


Nyx Robey

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Nyx‘s research interests include dissemination and implementation science in psychological research, including the systems and organizational factors that ensure an intervention’s success, particularly within diverse populations of youth. At W&M, her research examines the factors that influence the impact of youth mentoring programs on positive mental health outcomes. These interests stem from a multitude of experiences with youth, school partners, and AmeriCorps. Her long-term goal is to connect her research to public policy to ensure equal access to evidence-based interventions across traditionally underserved populations.


Shannon Hahn


Shannon’s research interests include studying the origins, development, and consequences of childhood externalizing disorders (i.e., ADHD, oppositional defiant disorder, and conduct disorder) by using a diverse array of research methods. Additionally she’s interested in identifying genetic and environmental risk factors that contribute to negative psychiatric, and socio-emotional outcomes as well as potential protective factors.



Research Assistants

The Raposa lab includes a team of 10-15 undergraduate research assistants who help with study design, data collection and management, data analysis, and manuscript writing. Undergraduate students have the opportunity to help with existing studies, or to propose and conduct an independent research project.