Edna B. Foa, Ph.D. is a Professor of Clinical Psychology in Psychiatry at the University of Pennsylvania and Director of the Center for the Treatment and Study of Anxiety. She received her Ph.D. in Clinical Psychology and Personality, from University of Missouri, Columbia, in 1970. Dr. Foa devoted her academic career to study the psychopathology and treatment of anxiety disorders, primarily obsessive-compulsive disorder (OCD), post traumatic stress disorder (PTSD), and social phobia and is currently one of the world leading experts in these areas.