Sixty-one problem drinkers were randomly assigned to either immediate treatment or a 4-week wait-list control group. Treatment consisted of a computer-based brief motivational intervention, the Drinker's Check-up (DCU). Outcomes strongly support the experimental hypotheses and long-term effectiveness of the treatment. Overall, participants reduced the quantity and frequency of drinking by 50%, and had similar reductions in alcohol-related problems that were sustained through 12-month follow-up. The DCU seems to be effective in enhancing problem drinkers' motivation for change.
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Hester et al. (2005) studied this question.
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