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Furthermore, these tests are easy to administer and have been used in a variety of populations. In general, all versions of the DAST yield satisfactory measures of reliability and validity for use as clinical or research tools. The DAST also tended to have moderate to high levels of validity, sensitivity, and specificity. The DAST tended to have moderate to high levels of test-retest, interitem, and item-total reliabilities. The Assessment of Alcohol-related Disabilities and Remaining Working Ability of the Alcoholics. The Michigan Alcoholism Screening Test: the Quest for a New Diagnostic Instrument. Descriptive information about each version of the test, as well as discussion of the empirical literature that has explored measures of the reliability and the validity of the DAST, has been included. Validity and Reliability of the Michigan Alcoholism Screening Test: A Review. Publications in which the DAST was used as a screening tool but had no data on its psychometric properties were not included. All articles that addressed the reliability and the validity of the DAST were examined. An extensive literature review was conducted using the Medline and Psychinfo databases from the years 1982 to 2005. The reliability and the validity of the adolescent version of the DAST are also reviewed. Notwithstanding that caveat, comprehensive and valid assessment of older adults can be accomplished through an understanding of the interaction of age-related factors that influence the experience and presentation of psychiatric disorders, and an appreciation of the strengths and weaknesses of the assessment instruments that are used to achieve valid and reliable assessments.This article reviews the reliability and the validity of the (10-, 20-, and 28-item) Drug Abuse Screening Test (DAST).

This paucity of age-appropriate assessment instruments is an impediment to reliable and valid assessment. The assessment of older adults is unfortunately plagued by a paucity of age-appropriate assessment instruments, as most instruments have been developed with young adults. An appreciation of age-related and non-normative changes in cognitive skills and sensory processes is particularly important both for planning the assessment process and the interpretation of findings.

A biopsychosocial approach to assessment is particularly important for older adults due to the substantial interplay of biological, psychological, and social factors that collectively produce the clinical presentation faced by clinicians. The assessment of older adults is quite challenging in light of the many age-related physiological and metabolic changes, increased number of chronic diseases with potential psychiatric manifestations, the associated medications and their side effects, and the age-related changes in the presentation of common mental health problems and disorders.