What question did this study set out to answer?

To quantify the functional relationship between escalating blood alcohol concentrations, objective psychomotor performance degradation, and self-perceived driving competence.

March 1, 1974Clinical Pharmacology & Therapeutics

Quantitative relationship between blood alcohol concentration and psychomotor performance

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Authors

MEMichael A. EvansNorthwestern University RMRobert MartzIndiana University Health BRBruce E. RoddaBroomfield Hospital

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Implication

Controlled laboratory study reveals linear psychomotor performance deterioration with rising blood alcohol concentration in males, highlighting driving competence loss even below 0.08% BAC.

Key Points

To quantify the functional relationship between escalating blood alcohol concentrations, objective psychomotor performance degradation, and self-perceived driving competence.
Evaluated 14 male participants across targeted blood alcohol concentrations of 0, 25, 50, 75, and 100 mg% administered via calculated alcohol doses.
Measured actual blood alcohol concentrations at scheduled intervals using a Breathalyzer and evaluated performance changes via covariance analysis across psychomotor tests (PM, WB, DAF) and a modified CMI questionnaire.
Covariance analysis demonstrated that psychomotor performance on the PM, WB, and DAF tests deteriorated linearly as blood alcohol concentration increased.
Subjective driving impairment escalated with dose: 11 of 14 participants (78.6%) judged their driving impaired at a mean BAC of 61 mg%, and all 14 participants (100%) reported driving impairment at a mean BAC of 89 mg%.

Cite This Study

Evans et al. (1974) studied this question.

synapsesocial.com/papers/6a71012b660549caf2c5a4dd https://doi.org/10.1002/cpt1974153253

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Implication

Controlled laboratory study reveals linear psychomotor performance deterioration with rising blood alcohol concentration in males, highlighting driving competence loss even below 0.08% BAC.

Quantitative relationship between blood alcohol concentration and psychomotor performance

Discussion

Member takes

Implication

Key Points

Cite This Study

Quantitative relationship between blood alcohol concentration and psychomotor performance

Discussion

Member takes

Implication

Key Points

Cite This Study

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