Her work focuses on etiology, maintenance, prevention, and intervention of high-risk alcohol and substance use among late adolescents and young adult college students. She has an innovative and impressive portfolio of work examining developmental, social, and motivational influences on etiology and prevention of high-risk behaviors including alcohol and marijuana use, as well as work evaluating impact of drug control policies, specifically marijuana legalization, in relation to comorbid alcohol and tobacco use. Her most recently funded work will evaluate longitudinal trajectories of alcohol, marijuana, and tobacco use during the transition from high school into young adulthood, testing competing models of factors influencing development and desistence of alcohol and substance use disorders throughout this transition.