Psychotherapy for Psychosis, Adverse Events, and Substance Misuse

Inclusion Criteria

• •Current patient at the Nova Scotia Early Psychosis Program (NSEPP) for the duration of the study
• •Aged 19-35 years
• •Diagnosis of a primary psychotic disorder (i.e., schizotypal disorder, delusional disorder, brief psychotic disorder, schizophreniform disorder, schizophrenia, schizoaffective disorder, substance/medication-induced psychotic disorder, other specified schizophrenia spectrum and other psychotic disorder, unspecified schizophrenia spectrum and other psychotic disorder)
• •Diagnosis of a primary psychotic disorder within the past 5 years; participants must not surpass this 5-year diagnostic window whilst enrolled in the study
• •Have experienced 1 or more negative, distressing lifetime adverse events (e.g., child abuse, discrimination) listed on the Trauma and Life Events (TALE) checklist that the participant indicates still affects them now
• •At least one score within the "moderate" or "high" risk range for any substance (except tobacco products) on the WHO Alcohol, Smoking and Substance Involvement Screening Test (ASSIST)
• •Speaks and understands English