Clinically useful assessments: substance use and comorbid psychiatric disorders.

This review addresses the assessment of substance use and related constructs with persons having severe and persistent mental illness. The review contains two major sections. The first section focuses on issues particular to the assessment of substance use and abuse in the context of major mental illness; these include the social and motivational context of assessment, the impact of mental status and acute symptoms, limitations associated with acute and chronic cognitive impairment, and the psychosocial relevance of assessment items. The second section highlights a selected set of substance assessment tools for use with this population; evidence for the reliability, validity, and/or feasibility of these tools is summarized. Each instrument meets the criteria of being: (a). relatively brief; (b). easy to administer and interpret; and (c). useful for treatment planning, motivational feedback, and/or monitoring change.