Thomas S. Weisner, PhD is Prof. of Anthropology, Departments of Psychiatry (NPI Semel Institute, Center for Culture and Health) and Anthropology at UCLA. His research and teaching interests are in culture and human development; medical, psychological and cultural studies of families and children at risk; mixed methods; and evidence-informed policy. He is Director of the Center for Culture & Health and UCLA, and the Fieldwork and Qualitative Data Laboratory in the Mental Retardation Research Center.