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On the measurement of pilot perceptual workload - A comparison of assessment techniques addressing sensitivity and intrusion issuesA flight simulator-based study was conducted to examine fourteen distinct mental workload estimation measures, including opinion, secondary task, physiological, and primary task measures. Both the relative sensitivity of the measures to changes in mental workload and the differential intrusion of the changes on primary task performance were assessed. The flight task was varied in difficulty by manipulation of the presentation rate and complexity of a hazard-perception task that required each of 48 licensed pilots to rely heavily on their perceptual abilities. Three rating scales (Modified Cooper-Harper, Multi-descriptor, and Workload-Compensation-Interference/Technical Effectiveness), two secondary task measures (time estimation and tapping regularity), one physiological measure (respiration frequency), and one primary task measure (danger-condition response time) were reliable indicants of workload changes. Recommendations for applying the workload measures are presented.
Document ID
19850034174
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Casali, J. G.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Wierwille, W. W.
(Virginia Polytechnic Institute and State University Blacksburg, VA, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: Ergonomics
Volume: 27
ISSN: 0014-0139
Subject Category
Behavioral Sciences
Accession Number
85A16325
Funding Number(s)
CONTRACT_GRANT: NAG2-17
Distribution Limits
Public
Copyright
Other

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