Accession Number : AD0696345

Title :   AN INVESTIGATION OF THE COMPARATIVE SUITABILITY OF FOREARM, HAND AND THUMB CONTROLS IN AQUISITION TASKS,

Corporate Author : MEDICAL RESEARCH COUNCIL CAMBRIDGE (ENGLAND) APPLIED PSYCHOLOGY RESEARCH UNIT

Personal Author(s) : Hammerton,M. ; Tickner,A. H.

Report Date : 1966

Pagination or Media Count : 6

Abstract : Performance of subjects on a set of two-dimensional velocity control acquisition tasks was measured when the control was operated by thumb, hand, and forearm. Four control conditions--high and low sensitivity with 0 and 2 sec exponential lag--were used. Six groups, each of 6 naval ratings, acted as subjects; and the three limb-segments were compared under all conditions. It was found that, under the easiest condition, there was no significant difference between the controls; but in the most difficult, hand was superior to both forearm (p<0.001) and thumb (p<0.01), whilst thumb was superior to forearm (p<0.01). (Author)

Descriptors :   (*PERFORMANCE(HUMAN), CONTROL SYSTEMS), (*EXTREMITIES, PERFORMANCE(HUMAN)), HANDS, HUMAN FACTORS ENGINEERING, MACHINES, VELOCITY, SIMULATORS, CONTROL STICKS, VISUAL SIGNALS, DISPLAY SYSTEMS, SENSITIVITY, GREAT BRITAIN

Subject Categories : Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE