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The effects of control order, feedback, practice, and input device on tracking performance and perceived workloadThe present experiment examined the influence of several task-related factors on tracking performance and concomitant workload. The manipulated factors included tracking order, the presence or absence of knowledge of performance, and the control device. Summed root mean square error (rmse) and perceived workload were measured at the termination of each trial. Perceived workload was measured using the NASA Task Load Index (TLX) and the Subjective Workload Assessment Technique (SWAT). Results indicated a large and expected effect for track order on both performance and the perception of load. In general, trackball input was more accurate and judged for lower load than input using a mouse. The presence or absence of knowledge of performance had little effect on either performance or workload. There were a number of interactions between factors shown in performance that were mirrored by perceived workload scores. Results from each workload scale were equivalent in terms of sensitivity to task manipulations. The pattern of results affirm the utility of these workload measures in assessing the imposed load of multiple task-related variables.
Document ID
19900039239
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hancock, P. A.
(University of Southern California Los Angeles, CA, United States)
Robinson, M. A.
(Southern California, University Los Angeles, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Behavioral Sciences
Meeting Information
Meeting: International Symposium on Aviation Psychology
Location: Columbus, OH
Country: United States
Start Date: April 17, 1989
End Date: April 20, 1989
Accession Number
90A26294
Funding Number(s)
CONTRACT_GRANT: NCC2-379
Distribution Limits
Public
Copyright
Other

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