Abstract
The performance of six car drivers was assessed over a 3½ mile route in city traffic at 9 am. and 4–15 p.m. on two days. On one they also drove alone between the tests, on the other they did laboratory work. Six experienced drivers judged performance on the p.m. test to be worse when driving had continued. The decrement occurred mainly in perceptual skills and courtesy shown towards other road users, rather than in motor skills.
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1. Many thanks are due to the Chief Constable, Mid-Anglia Constabulary, for allowing his staff to act as judges. Their assistance, and that of Chief Inspector Prentice who organized the program of testing, is very gratefully acknowledged. The drivers were volunteers from the A.P.R.U. and the vehicle was supplied by the Medical Research Council.
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Brown, I.D. Decrement in skill observed after seven hours of car driving. Psychon Sci 7, 131–132 (1967). https://doi.org/10.3758/BF03328500
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DOI: https://doi.org/10.3758/BF03328500