The authors report an abbreviated version of the Michigan Alcoholism Screening Test (MAST). They hypothesized, on the basis of previously published data, that scores based on ten of the questions of the MAST would be as effective in discriminating between alcoholics and nonalcoholics as scores based on all 25 questions. The responses of 60 alcoholic and 62 nonalcoholic psychiatric patients supported their hypothesis.Abstract Teaser