EXPERIMENTAL STUDIES OF HUMAN VIGILANCE
- 1 February 1963
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
A series of experiments was conducted on human vigilance or the characteristics of long-term human attentiveness for the occasional occurrences of signals which are to be detected and reported. Emphasis was given complex visual displays with multiple stimulus sources and alpha-numeric signals of the general class found in semi-automatic man-machine systems. The results were that (1) vigilance decrement usually occurs in small but reliable amounts within a session but does not increase as a function of number of daily sessions, (2) only response produced stimuli from simple decision behavior were a source of stimulation that deterred vigilance decrement in accord with the arousal hypothesis, (3) temporal uncertainty was not associated with differential vigilance decrement although spatial uncertainty appeared to be under some circumstances, and (4) feedback about the operator's proficiency after each response was a training method that improved monitoring behavior in a stable manner.Keywords
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