Detectability Measures in Vigilance: Comment on a Paper by Wiener, Poock, and Steele
- 1 June 1965
- journal article
- research article
- Published by SAGE Publications in Perceptual and Motor Skills
- Vol. 20 (3_suppl) , 1217-1221
- https://doi.org/10.2466/pms.1965.20.3c.1217
Abstract
Results of a study of time sharing and vigilance reported by Wiener, et al. (1964) have been reanalysed from the viewpoint of signal detection theory. The reported decline in probability of detecting a signal is shown to be due entirely to a progressive change in the observers' response criteria and not to a change in the detectability of the signal. In contrast to the original report that time sharing had a non-significant effect on the probability of detecting a signal, the effect on the detectability of the signal is large. The importance of considering detectability rather than detection measures in vigilance studies is stressed.Keywords
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