What is the assessment process, and why is it so important to understand? This videotape gives an overview of the assessment process and makes clinicians more comfortable conducting assessments and selecting diagnostic tools during their client’s treatment. Adult and adolescent tools examined include the Addiction Severity Index (ASI); the Problem Oriented Screening Instrument for Teenagers (POSIT); the Adolescent Problem Severity Index (APSI); and the Personal Experience Inventory (PEI). Running Length – 22 min. 1992.