The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Differential Effects Of Noise And Fatigue On A Complex Counting Task

Report Number: WADC TR 55-359
Author: Jerison, Harry J.
Corporate Author: Aero Medical Laboratory
Laboratory: Aero Medical Laboratory
Date of Publication: 1956-10
Pages: 26
PB Number: PB121807
AD Number: AD0110506

This report compares performance under the combined stress of noise and fatigue with that of fatigue alone. A complex mental counting test which involves mental work of a rather high order was the source of the performance measure. Although statistically significant differences between performance in noise and quiet were found, these were not straightforward, and no simple relationship of the performance decrements and specific abilities could be established. It is therefore impossible to relate abilities involved in performance on the complex counting test to changes in performance under noise stress. Some indication was found of a direct relationship between susceptibility of individual subjects to auditory fatigue during a specific work period in noise and their ability to maintain perfomance in noise.

Hunt Library, Embry-Riddle Aeronautical University
Download this report

(PDF, 1.78 MB, 26 pages)

Other options for obtaining this report

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a full-image download of the report, exists at DTIC

Via National Technical Information Service:
The NTIS Order Number for this report is: AD110506
This report may have been digitized and made freely available for public download, or made publicly available for purchase by the National Technical Information Service through their online database, the National Technical Reports Library

Indications of Public Availability
A PB Number, PB121807 , exists for this report, indicating public availability of the report at time of publication

No digital image of an index entry indicating public availability is currently available
The inside cover of this report indicates that it was released for public sale