Questioning the link between PTSD and cognitive dysfunction.

Posttraumatic stress disorder (PTSD) has been linked with impairment in cognitive functioning, but anomalies appear to arise on several levels, masking the true nature of the relationship. On one level, there is a blurring of the emotional and physical causes of cognitive dysfunction, especially with memory problems that are similar to those due to neurological disorders. At other levels, problems are evident due to issues such as overgeneralizing from specific populations to the general population, and the use of narrow-focused neuropsychological assessment instruments that neither dissociate among precise memory components nor relate to everyday situations. In this review we highlight methodological problems and concerns, and make suggestions to establish valid links between PTSD and cognitive dysfunction.