Cognitive Control Training for Extinction in PTSD

Inclusion Criteria: * Fluent in English * Meet current DSM-5 criteria for Posttraumatic Stress Disorder * Are willing to attend 8 total remote sessions of working memory training over course of four weeks * Are willing to attend MRI scans pre and post working memory training * 4-week stability on pharmacological and psychosocial treatments Exclusion Criteria: * A lifetime history of psychotic disorders, lifetime history of bipolar disorder * Past-year severe substance use and severe alcohol use disorder. Mild-to-moderate alcohol use disorder will be allowed to enhance generalizability in our sample due to the high comorbidity of alcohol use and PTSD * History of any neurological disorder that might be associated with cognitive dysfunction (e.g., cerebrovascular accident, intracranial surgery, aneurysm, seizure disorder) * Acute suicidality requiring immediate clinical intervention * Moderate to severe traumatic brain injury (TBI). However, mild to moderate levels of TBI (mTBI) will be included * Receiving benzodiazepines or medications with anticholinergic effects that may affect fear learning measures * Inability to safely complete fMRI session (i.e., metal in body, medical implants)