Kenneth R. Ginsburg, M.D. is a pediatrician specializing in Adolescent Medicine at the Children’s Hospital of Philadelphia, and is a professor of pediatrics at the University of Pennsylvania School of Medicine. He is a Director of Health Services at Covenant House Pennsylvania, a shelter for homeless and marginalized youth. He has written extensively promoting teen health and resilience, including the books Reaching Teens: Strength-based, Trauma-sensitive, Resilience-building Communication Strategies Rooted in Positive Youth Development. He has also produced and edited the multimedia professional toolkit, Reaching Teens: Strength-based Communication Strategies to Build Resilience and Support Healthy Adolescent Development. His definitive memorandum for the American Academy of Pediatrics, The Importance of Play in Promoting Healthy Child Development and Maintaining Strong Parent-Child Bonds, formed the basis for his congressional testimony in May 2007.