The present work assessed cognitive functions, such as attention, memory, and cognitive flexibility in 20 Bosnian men with combat-related PTSD, acquired during the Balkan war 1992-1996. Veterans with chronic PTSD were tested - 7 years after the end of the hostilities - with a battery of tests and questionnaires. Performance was compared with age- and IQ matched veterans with no PTSD. Study I disclosed pervasive impairments with large effect sizes pertaining to attention, working memory, executive function and memory. Study II documented that PTSD symptom severity is systematically related to...