Thomas A. WaddenThomas A. Wadden, PhD, is the Albert J. Stunkard Professor of Psychology in Psychiatry at the Perelman School of Medicine, University of Pennsylvania. He also is Visiting Professor of Psychology at Haverford College. Dr. Wadden's more than 500 scientific publications have focused on the treatment of obesity by methods including diet, physical activity, behavior therapy, medication, and surgery. He also has investigated the health and psychosocial consequences of obesity and its associated eating disorders. Dr. Wadden is past president of the Obesity Society and has served on numerous panels for the National Institutes of Health. He is the recipient of numerous honors, including the TOPS Research Achievement Award from the Obesity Society, mentoring awards from the Perelman School of Medicine and the Obesity Society, and the Distinguished Alumni Award from the Department of Psychology at The University of North Carolina at Chapel Hill.