Could a trusted friend or family member enhance PTSD recovery?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * be able to read, write, and speak English fluently * reside in Ontario * be able to provide written informed consent * be between the ages of 18 and 65 (to ensure generalizable results) * meet screening criteria for PTSD or Complex-PTSD (CPTSD) on the ITQ, administered at the time of screening, to be corroborated with the results of the ITI * be able to attend regular online, 2-hour sessions once/week for 9 weeks, and be willing to complete the pre-, post-intervention, and follow-up assessments * have reliable access to a computer with a working microphone and camera, and * have reliable and consistent access to the internet. Exclusion Criteria: * use benzodiazepines daily or almost daily * use narcotics daily or almost daily * meet criteria for Alcohol/Cannabis use that may interfere with their ability to participate in the study, as assessed by the AUDIT and CUDIT-R embedded into the eligibility pre-screener and corroborated with the DART (to be determined by the clinical team) * have a history of Moderate to Severe brain injury or loss of consciousness with prolonged effects that interfere with daily functioning at school, work, or within the family unit * have a history of a neurological disorder that may interfere with their ability to participate in the study (to be determined by Dr. McKinnon's clinical team) * have a diagnosis of psychotic disorder, borderline personality disorder, or bipolar disorder * have a diagnosis of a neurodevelopmental disorder that may interfere with their ability to participate in the study (to be determined by Dr. McKinnon's clinical team) * have other conditions/impairments/considerations that could interfere with completion of study tasks or participation in the study (to be determined by Dr. McKinnon's clinical team) * have previously participated in GMT * are receiving treatment with anti-cholinergics, anti-psychotic medication, or psychostimulants * have had ECT within the past year * are currently engaged in a trauma-focused intervention that may confound the findings of the current study (to be determined by Dr. McKinnon's clinical team) * are an active serving member of the Canadian Armed Forces.