ABSTRACT
Examination of cognitive factors pertaining to panic disorder (PD) requires drawing on the research conducted on closely related anxiety disorders, such as agoraphobia with panic attacks and generalized anxiety disorder (GAD). One reason is purely pragmatic: There is almost no such research on patients with PD alone. The second reason is more empirical. To date, there is little evidence to support the assumption that PD, agoraphobia with panic, and GAD are clearly delineated conditions (see, for example, Hallam, 1978; Thyer, Himle, Curtis, Cameron, & Nesse, 1985; Turner, Beidel, & Jacob, this volume).
