Roles of Guilt Cognitions in Trauma-Related Sleep Disturbance in Military Veterans With Posttraumatic Stress Disorder.

: Despite a well-established role of guilt cognitions in the maintenance and treatment of posttraumatic stress disorder (PTSD), relationships of guilt cognitions to nightmares are not well understood. This study investigated the ways in which guilt cognitions, related to traumatic events, influenced the relationship between combat exposure and trauma-related sleep disturbance in military Veterans with PTSD. : We recruited a sample of 50 Veterans with PTSD who completed study measures at a screening session.