Effectiveness of Cognitive Processing Therapy in Pregnant Women With a History of Pregnancy Loss/Complication

Inclusion Criteria: * Meet DSM-IV (Diagnostic and Statistical Manual of Mental Disorders) criteria for full PTSD or partial PTSD. * Clinician Administered PTSD Scale (CAPS) score of ≥18. * Gestational age at the time of presentation is between 8 and 30 weeks. * History of at least one of the following: previous pregnancy loss or losses, voluntary termination due to fetal anomaly, obstetrical complication including childbirth, premature birth (\<32 weeks), unexpected neonatal complication, emergency C-section, neonatal death within 28 days of delivery. * Fluency in spoken and written English. Exclusion Criteria: * Presence of any lifetime or comorbid DSM-IV Axis I psychotic disorder (including bipolar disorder and MDD (Major Depressive Disorder) with psychotic features and excepting Psychosis NOS (Not Otherwise Specified) related to sensory hallucinations, i.e. reexperiencing symptoms). * Presence of any comorbid Axis I or Axis II (as determined using the SCID-II (Structured Clinical Interview for DSM-IV)) disorder, which would require immediate treatment or renders the subject clinically unsuitable for this RTC (randomized clinical trial). * History of PTSD due to a NON-Pregnancy related traumatic event. * Presence of a known abnormality in the present fetus. * Presence of a serious medical or neurological illness. * Starting a new psychotropic agent within the previous 3 months. * Assessed to require a new psychotropic medication at the screening appointment or an adjustm…