Some sources of load and constraints on operator performance in a simulated radar air traffic control task /

"Two general factors relevant to human performance in a 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."--Abstract.This report covers part of the research on man-machine systems being conducted in the Laboratory of Aviation Psychology and the Department of Electrical Engineering of The Ohio State University. Prepared for the Aerospace Medical Laboratory of the Wright Air Development Division under Contract No. AF 33(616)-6166, Project 7184, Task 71583."March 1961."Includes bibliographical references (pages 14-15)."Two general factors relevant to human performance in a 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."--Abstract.Research supported by the United States Air Force Air Research and Development Command, and performed by The Ohio State University, Laboratory ofAviation Psychology and the OSU Research Foundation, under contract no.Mode of access: Internet.Robert B. Sleight