Kimberly Hieftje, PhD, is an Assistant Professor of Pediatrics and co-director of XRPeds at Yale, an initiative that focuses on the development, evaluation, and implementation of theory and evidence-informed behavioral interventions and clinical applications for youth using extended reality (augmented, virtual, and mixed reality) and game technology. Over the past 13 years, Dr. Hieftje and her team has developed and evaluated game-based health promotion interventions for youth that have focused on topics such as e-cigarette prevention, tobacco use prevention, marijuana use prevention, HIV/STI prevention, alcohol harm reduction, bystander intervention, LGBTQ bullying, partner communication and health relationships, and mental health. Dr. Hieftje is also the Editor-in-Chief of the Games for Health Journal, the premier journal in the field of serious games for health.