William 'Bill' Riley was appointed National Institutes of Health associate director for behavioral and social sciences research, and director of the NIH Office of Behavioral and Social Sciences Research in August 2015. A clinical psychologist, he also has an appointment as professorial lecturer in the School of Public Health at George Washington University. His research interests include behavioral assessment, psychosocial health risk factors, tobacco use/cessation, and the application of technology to preventive health behaviors and chronic disease management.