Examining Written Disclosure as a Treatment for Post-Traumatic Stress Disorder

Inclusion Criteria: * Primary diagnosis of post-traumatic stress disorder * Involved in motor vehicle accident that occurred at least 3 months ago Exclusion Criteria: * Current diagnosis of mania, hypomania, bipolar depression, psychotic disorder, substance abuse disorder, or severe depression * History of psychosis * Active suicidality or history of two or more suicide gestures or attempts in the past year * Significant cognitive impairment * Current participation in a psychosocial treatment, such as individual or group therapy led by a clinician