Alcohol and Speed-Accuracy Tradeoff

Human Factors - Tập 21 Số 4 - Trang 433-443 - 1979
O. H. Rundell1, Harold L. Williams1
1Department of Psychiatry & Behavioral Sciences , University of Oklahoma Health Sciences Center , Oklahoma City , Oklahoma

Tóm tắt

Performance on two auditory choice reaction time (RT) tasks was studied in a group of 12 subjects under the influence of graded doses of ethyl alcohol ranging from placebo to 1 g/kg body weight. Deadline procedures were employed in a side discrimination and a pitch discrimination task to permit the calculation of speed-accuracy tradeoff functions (accuracy versus RT). Accuracy declined as a function of dose, but alcohol did not significantly influence RT. Conversely, accuracy was not affected by task; but the pitch discrimination task required an average of 88 ms more time than the side task. Alcohol dose and task produced independent effects on the speed-accuracy tradeoff function. As dose increased, the slope of the tradeoff function declined; but slopes were equivalent for the two tasks. On the other hand, the x-intercept (where accuracy equals chance levels) was 90 ms greater for the pitch task than for the side task.

Từ khóa


Tài liệu tham khảo

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Thông tin xuất bản

Human Factors

Tập 21 Số 4

433-443

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