Reductions in self-blame cognitions predict PTSD improvements with cognitive processing therapy for military sexual trauma-related PTSD.

Reductions in trauma-related negative cognitions during Cognitive Processing Therapy (CPT) are theorized to precede posttraumatic stress disorder (PTSD) symptom reduction. This mechanism of change has not been validated for veterans with military sexual trauma-related PTSD. Using data from a previously published randomized clinical trial (n = 32), changes in trauma-related negative cognitions about self, self-blame, and the world were entered as predictors of change in PTSD symptoms for cross-lagged panel analyses. From baseline to 6-months posttreatment, only changes in self-blame predicted and temporally preceded changes in PTSD symptoms, highlighting a potential mechanism of change in CPT for military sexual trauma-related PTSD.