Faking on the Mississippi Scale for Combat-Related Posttraumatic Stress Disorder.

The Mississippi Scale for Combat-Related Posttraumatic Stress Disorder is a 35-item inventory developed for the differential diagnosis of posttraumatic stress disorder (PTSD). Thirty Veterans Administration Medical Center patients receiving vocational counseling were asked to fake PTSD on this scale. These volunteers were age and gender cohorts of Vietnam combat veterans and had primary diagnoses of substance abuse or anxiety disorder. None had been in combat or in Vietnam, nor had any lived with a Vietnam veteran