Jeffrey J. Froh, PsyD, is an associate professor of psychology at Hofstra University and a leading scholar in positive youth psychology. His research, which has been featured in mainstream media such as The Wall Street Journal and The Washington Post, focuses on the wellsprings, assessment, outcomes, and enhancement of gratitude in children and adolescents. He is past associate editor for the Journal of Positive Psychology, and his research has been funded by the John Templeton Foundation.   Acacia C. Parks, PhD, is an assistant professor of psychology at Hiram College. She received her PhD from the University of Pennsylvania, where she worked under Martin Seligman at the Positive Psychology Center. Her research focuses on the efficacy of positive interventions and the psychological and behavioral characteristics of individuals who use them. She serves as an associate editor of the Journal of Positive Psychology and was recently guest editor of the special issue amp quot Positive Psychology in Higher Education. amp quot She is also editor of a forthcoming handbook of positive psychological interventions from Wiley-Blackwell. Dr. Parks is an active teacher of positive psychology and critical writing, and maintains a blog at Psychology Today.