ABSTRACT:The PTSD Theory and practice of rational emotive behavior therapy (REBT) is explained and compared with other forms of cognitive behavior therapy (CBT) that help clients to dispute their dysfunctional cognitive processing and to use exposure. Because these other CBT Theories do not emphasize REBT's principles of absolutist musts and demands it is shown how REBT hypotheses may better explain some of the cognitive processing theories of other CBT formulations regarding PTSD.Post-traumatic stress disorder (PTSD) is a highly complex and often highly individualized syndrome which, recent theory and research has shown, fits quite well with the theory and practice of rational emotive behavior therapy (REBT). For REBT, as this paper will show, particularly stresses the creation of PTSD by its victims' dysfunctional or irrational Beliefs (iBs), by their frequently avoiding and numbing themselves to the severe pain of their traumatic experiences, and by their requiring some form of exposure to overcome their disorder; and most modern authorities on and researchers of PTSD also stress these factors.As a number of writers have recently noted, PTSD can misleadingly be viewed as a relatively simple disorder but actually had better be seen in a complex systems, constructivist, holistic, and connectionist light (