Melissa A. Lewis, PhD is an internationally recognized researcher studying alcohol use, cannabis use and sexual decision making among adolescents and young adults. Her research seeks to understand the cognitive, social, and contextual factors that contribute to health-risk behaviors, with the goal of developing and implementing evidence-based interventions that reduce acute and longer-term consequences. Dr. Lewis' work integrates intensive longitudinal methods, including ecological momentary assessment (EMA), mobile health technologies, and adaptive digital interventions to examine how risk unfolds in everyday life and how prevention strategies can be delivered in real time. Her current research focuses on alcohol use, cannabis use, simultaneous alcohol and cannabis use, sexual decision making, protective behavioral strategies, and implementation science, with an emphasis on improving the reach and effectiveness of interventions in community settings. She has served as Principal Investigator on six federally funded research projects supported by the National Institute on Alcohol Abuse and Alcoholism (NIAAA) and as Co-Investigator on more than twenty NIH-funded grants. Dr. Lewis has authored more than 170 peer-reviewed publications and has received national recognition for her contributions to the prevention of substance use, sexual risk reduction, and the advancement of technology-based behavioral interventions. Through her research, mentorship, and community partnerships, Dr. Lewis is committed to translating behavioral science into scalable interventions that improve health, reduce acute and longer-term consequences associated with substance use and sexual risk behaviors, and promote healthier developmental trajectories for adolescents and young adults.
Dana M. Litt, PhD is conducts theory-driven research primarily focused on examining decision-making processes behind why adolescents and young adults engage in health-risk behaviors, particularly alcohol use, and applies this knowledge to develop, test, and implement effective interventions at both the individual and family levels. A majority of her research explores the role of social influences, both offline (such as parental and peer pressures) and online (social media), in shaping decisions about alcohol use. By understanding the nature and impact of these social influences, she works to design and implement developmentally and culturally appropriate alcohol interventions in local communities. Across her work, Dr. Litt prioritizes community-engaged research and implementation science with the ultimate goals of addressing substance use, supporting individuals and families, and strengthening academic and community partnerships. Dr. Litt has served as Principal Investigator on 5 federally funded research projects supported by the National Institute on Alcohol Abuse and Alcoholism (NIAAA) and as Co-Investigator on over 10 NIH-funded research grants. Dr. Litt has authored more than 80 peer-reviewed publications, contributing extensively to the understanding of offline and online social influences on adolescent and young adult substance use.