Inclusion Criteria

• English-speaking
• Age 18 to 70
• MST survivors, with MST defined as actual or threatened sexual violence, from Vietnam era to current OIF/OEF/OND
  
• Diagnosed with PTSD consequent to MST, with a minimum CAPS score > 40 (the threshold defining the moderate range of PTSD)
• Medically stable at time of study enrollment (for persons with chronic injuries and that any disability present does not prevent attendance of weekly outpatient therapy sessions
• Ability to provide informed consent and function at an intellectual level sufficient to allow accurate completion of all assessment instruments
• Stable on psychotropic medication for the prior 60 days

Exclusion Criteria

• Lifetime or current diagnosis of schizophrenia or other psychotic disorder, bipolar disorder
• Participation in a clinical trial for MST-related psychiatric conditions or PTSD during the previous 3 months
• Current evidence of significant unstable medical illness or organic brain impairment such that the patient could not attend sessions regularly or complete assessments
  
• Patients who in the investigator’s judgment pose a current homicidal or suicidal risk
• Current or history of substance dependence in the past 90 days