W. Stewart Agras received his medical degree from University College, London University, UK, and has published over 300 articles and chapters. He is currently Professor of Psychiatry at the Stanford University School of Medicine, and Director of the Psychiatry Outpatient Clinics. In addition, he is the Director of the Behavioral Medicine Program at Stanford. He is a Past President of the Association for the Advancement of Behavior Therapy (AABT) and of the Society for Behavioral Medicine, and he has been a Fellow at the Center for Advanced Study in the Behavioral Sciences on two occasions.