Stepped Care for Posttraumatic Stress Disorder Study

Inclusion criteria: Assessed at pre-screening * Boston Medical Center primary care patient * At least 18 years of age * Access to computer or mobile device * Able to receive treatments in English or Spanish * Able to read at 4th grade level Assessed at baseline * Endorsement of Criterion A trauma using the Life Events Checklist for the DSM-5 (LEC-5), assessed at baseline * PTSD diagnosis, confirmed by the Clinician-Administered PTSD Scale for the DSM-5 (CAPS-5) assessed at baseline * Clinically appropriate for outpatient level of care * Stable on psychotropic medication for \>4 weeks Exclusion criteria: Assessed at pre-screening • Patient is currently engaged in clinician-administered therapy Assessed at baseline (clinician interview) * Patient is not clinically appropriate for outpatient level of care. * Acute risk for suicidal thoughts or behaviors, assessed by the Columbia Suicide Severity Rating Scale, administered by research clinician at baseline.