MEASURING THE SPARE ‘MENTAL CAPACITY ’OF CAR DRIVERS BY A SUBSIDIARY TASK
- 1 January 1961
- journal article
- research article
- Published by Taylor & Francis in Ergonomics
- Vol. 4 (1) , 35-40
- https://doi.org/10.1080/00140136108930505
Abstract
It is impossible to determine the degree to which a driver is absorbed in his driving by measuring his overt responses directly. However, relatively small changes in his spare ‘ mental capacity ’ can be detected by scoring his performance on a subsidiary task, which has no adverse effect upon driving. This technique is sufficiently sensitive to reveal the higher level of concentration required in a shopping area as compared with that required in a residential areaKeywords
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