Leslie F. Clark, PhD, MPH is an Associate Professor in the Division of Adolescent Medicine at Children’s Hospital, Los Angeles and University of Southern California. Dr. Clark is a social/health psychologist and the developer of project AIM (Adult Identity Mentoring) a nationally recognized evidenced based HIV and pregnancy prevention intervention for middle school youth. Her research targets early through late adolescents and emerging adults at risk for poor outcomes (including homeless youth, young gay men, and transgender youth). Dr. Clark has been conducting research in low income communities in the US and abroad for 18 years. Her behavioral research, interventions, and community collaborations address health, wellness, service needs, risk reduction, and positive youth development among vulnerable youth. During the last 15 years, Dr. Clark’s federally funded work involved the design, implementation and evaluation of several behavioral interventions that focus on reducing risk and promoting positive outcomes for adolescents, young adults, and their families.