Accession Number:

AD0254834

Title:

A COMPARISON OF PERFORMANCES ON SINGLE AND DUAL SENSORY MODE VIGILANCE TASKS

Descriptive Note:

Corporate Author:

HUMAN FACTORS RESEARCH INC LOS ANGELES CA

Report Date:

1961-02-01

Pagination or Media Count:

1.0

Abstract:

The purpose of this study was to compare vigilance performances on a visual display, an auditory display, and three dual-mode or combined audio-visual displays. The types of signals presented were different in the three dual-mode conditions. In one, the signals appeared simultaneously on both displays. In the second, they appeared either on the visual or the auditory display. And, in the third, one third of the signals appeared on the visual display, one third appeared on the auditory, and one third appeared simultaneously on both displays. Performance decrements were observed under all conditions as a function of time on watch. Under the dual-mode conditions, differential effects on detection performance were observed as a function of the type of signal. A significant positive relation between detection performances under alerted and watch conditions was observed, and the intercorrelations of individual performances from one watchstanding condition to another were low to moderate. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE