For one month, on Saturday nights researchers measured the blood alcohol content (BAC) of departing patrons at each of two taverns (baseline). The patrons were compensated for agreeing to do this with lottery tickets. Then, a treatment was administered that included (1) placing cards in the lottery tickets instructing them on how to pace their drinking to stay under the legal limit, (2) providing individual feedback on BAC to departing patrons, and (3) posting a large poster in each tavern indicating the percentage of patrons who drove home intoxicated the previous week. Data continued to be recorded during the treatment for one more month on Wednesday nights. The treatment reduced the mean BAC of departing patrons at each of the two taverns.
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For one month, on Saturday nights researchers measured the blood alcohol content (BAC) of departing...
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