Experimental approaches to cognitive abnormality in posttraumatic stress disorder.

During the past decade, experimental psychopathologists have increasingly applied the concepts and methods of cognitive psychology to elucidate information-processing abnormalities in people with posttraumatic stress disorder (PTSD). These studies have shown that individuals with PTSD: (a) selectively process trauma-relevant material in the emotional Stroop paradigm; (b) exhibit enhanced memory for material related to trauma in explicit and perhaps implicit tests; (c) exhibit difficulty forgetting trauma words during directed forgetting; and (d) exhibit problems retrieving specific autobiographical memories in response to cue words, instead recalling "overgeneral" memories. These studies suggest that experimental methods can complement traditional, self-report methods for studying cognitive disturbances in PTSD.