ArticleJournal of studies on alcohol and drugs2026
BAC Feedback Lowers Perceived Intoxication and Increases Perceived Driving Fitness.
Article in Journal of studies on alcohol and drugs, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveDriving under the influence (DUI) is one of few offenses in which guilt can be determined by a single measure (i.e., legal limit = 0.08% BAC). Drivers perform poorly when estimating their intoxication, yet the degree to which they perceive themselves to be intoxicated strongly predicts their decision to drive. Despite more prevalent breathalyzer use, it is unclear whether feedback that drivers' BAC approximates the legal limit dissuades the decision to drive. This study tested the effect of providing BAC feedback on drinkers' perceptions of their intoxication and driving fitness after drinking alcohol.
methodSixty-one drivers were randomly assigned to the control (C) (n=30) or feedback (F) (n=31) group. Participants attended three sessions (pre-feedback, feedback, post-feedback) during which they received 0.65g/kg alcohol (target BAC ≈ 0.08%). During the pre- and post-feedback sessions, groups rated their level of intoxication and perceived driving fitness. During the feedback session, those in the feedback group received explicit information about their actual BAC, while those in the control group received no information.
resultsPrior to receiving feedback, the groups did not differ in perceived intoxication and driving fitness. After receiving feedback, however, Group F perceived lower intoxication and greater driving fitness than Group C. These group differences occurred despite comparable BACs among the groups throughout the study.
conclusionsReceiving feedback that one's BAC approximates the legal limit may not increase the driver's perceived risk of driving.
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