Carbonell, David A.: - David A. Carbonell, PhD, is a clinical psychologist who specializes in treating anxiety in all its forms. He is author of Panic Attacks Workbook, The Worry Trick, and Fear of Flying Workbook. He is ''coach'' of the popular self-help site www.anxietycoach.com, and has taught workshops on the treatment of anxiety disorders to more than 9,000 professional psychotherapists in the U.S. and abroad. He is a long-standing member of the Anxiety and Depression Association of America, and a frequent presenter at their annual conferences. He received his doctorate in clinical psychology from DePaul University in 1985, and has maintained a practice devoted to the treatment of anxiety disorders since 1990. He lives in Chicago, IL, with his wife and a pair of rescue dogs. In his spare time, he is founding member of The Therapy Players, an improvisational comedy troupe of professional psychotherapists which performs at clubs, theaters, and mental health conferences throughout the Chicago area.Martin N. Seif, PhD, is cofounder of the Anxiety and Depression Association of America (ADAA), and was a member of its board of directors from 1977 through 1991. Seif is former associate director of the Anxiety and Phobia Treatment Center at White Plains Hospital, a faculty member of New York-Presbyterian Hospital, and is board certified in cognitive behavioral psychology from the American Board of Professional Psychology. He maintains a private practice in New York, NY; and Greenwich, CT; and is coauthor of What Every Therapist Needs to Know About Anxiety Disorders and OvercomingUnwanted Intrusive Thoughts.