Accession Number : AD0621106

Title :   DETECTABILITY MEASURES IN VIGILANCE: COMMENT ON A PAPER BY WIENER, POOCK, AND STEELE.

Descriptive Note : Technical note,

Corporate Author : DEFENCE RESEARCH MEDICAL LABS TORONTO (ONTARIO)

Personal Author(s) : Taylor,M. M.

Report Date : 20 APR 1965

Pagination or Media Count : 5

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. (Author)

Descriptors :   (*ATTENTION, DECISION THEORY), (*PERCEPTION(PSYCHOLOGY), SIGNALS), DETECTION, PERFORMANCE(HUMAN), PROBABILITY, PSYCHOLOGICAL TESTS, CANADA

Distribution Statement : APPROVED FOR PUBLIC RELEASE