Sabine Wilhelm, PhD, is associate professor of psychology at the Harvard Medical School and director of the Cognitive Behavior Therapy Program and clinical director of the Obsessive-Compulsive Disorder Clinic, at Massachusetts General Hospital. Gail Steketee, PhD, is a professor and co-chair in the department of clinical practice at the School of Social Work at Boston University. She is coauthor of Buried in Treasures. Aaron T. Beck, MD, created and refined cognitive therapy over the course of his research and clinical career. He has published more than 600 scholarly articles and twenty-five books, and has developed widely used assessment scales. Beck has received many prestigious awards, including the 2006 Albert Lasker Clinical Medical Research Award for developing cognitive therapy. In 2013, he became the first recipient of the Kennedy Community Health Award from The Kennedy Forum. Beck has been listed as one of the ten "individuals who shaped the face of American psychiatry" and one of the five most influential psychotherapists of all time. He is emeritus professor in the department of psychiatry at the University of Pennsylvania, and director of the Aaron T. Beck Psychopathology Research Center. His current research focuses on cognitive therapy for schizophrenia, cognitive therapy for suicide prevention, and dissemination of cognitive therapy into community settings.