Some Sources Of Load And Constraints On Operator Performance In A Simulated Radar Air Traffic Control Task

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Report Number: WADD TR 60-612
Author(s): Kidd, J. S.
Corporate Author(s): Laboratory Of Aviation Psychology, The Ohio State University; The OSU Research Foundation
Laboratory: Behavioral Sciences Laboratory
Date of Publication: 1961-03
Pages: 20
Contract: AF 33(616)-6166
DoD Project: 7184
DoD Task: 71583
Identifier: AD0255232

Abstract:
Two general factors relevant to human performance in man-machine system were subjected to experimental analysis: (a) the influence of task load on operator capacity and (b) the effects of situational constraints on operator adaptability. Four variables, traffic input rate, control zone area, control team organization, and arrival sequencing procedures, were manipulated. Results from the observation of six 2-man teams indicated that physically defined constraints were more detrimental than those imposed by rules or organization structure. Procedures intended to enhance performance which depend on operator predictions or anticipations were observed to have a limited utility. Under high load stress, operator's actions seemed entirely determined by the immediate circumstances.

Provenance: IIT

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