Focusing on one of the SPMI’s (Bipolar Disorder, Borderline Personality Disorder, Major Depression, Schizoaf fective Disorder, and Schizophrenia) and its relationship to substance use problems. 1. Describe how and why SPMI and substance use disorders often co-occur. 2. Describe the differential diagnosis associated with the disorder as well as comorbidity 3 Discuss latest research findings associated with the SPMI and substance use disorder and its implications for the field of human service-forensic behavioral health 4 Discuss intervention strategies and evidence-based practices most effective at treating the identified disorder.