Inclusion Criteria:  (1) diagnosis of a schizophrenia spectrum or other psychotic disorder including affective psychosis; (2) trauma history meeting Diagnostic and Statistical Manual of Mental Disorders (DSM-5) PTSD criterion A; (3) at least a mild impairment in either emotional regulation or interpersonal functioning, identified using predetermined cut-offs of ≤ 2 on the Emotion Regulation Skills Questionnaire or ≥ 1 on the Inventory or Interpersonal Problems-32 ; (4) at least 18 years of age; (5) clinically stable/taking a stable dose of antipsychotic medication; (6) French or English-speaking; and (7) with no major physical illness.  Exclusion Criteria:  (1) history of a medical or neurological condition that can affect cognition, which will be verified via participant self-report; (2) current severe substance use disorder; and (3) an IQ score below 70, estimated using the Wechsler Abbreviated Scale of Intelligence - Two subtest version (vocabulary, matrix reasoning)