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ReferencesNavigation arrowAuthorsNavigation arrowDouglas S. Fischer
Jun 18

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24

 
 

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Douglas S. Fischer

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Publications by Douglas S. Fischer (bibliography)

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1994
 
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Fischer, Douglas S., Moroney, William F. and Biers, David W. (1994): Workload Context Effect: An Elusive Phenomenon. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 1145-1149.

“The effect of workload context on subsequent performance and workload ratings has crucial implications regarding workload transition. However few studies have examined workload context effects; and those that have, report contradictory results. This study attempts to determine if the failure to find evidence of workload context effects might be attributable to methodological factors such as task duration, task difficulty, and experimental design. Twelve subjects "flew" three sessions of three trials on a computer-based flight simulator, and rated the workload after each trial. A pre-post experimental design presented the first and third trials at a medium level of difficulty while the second (experimental) trial was of low, medium, or high difficulty. Crosswinds of 2, 12, and 22 knots created the levels of low, medium, and high task difficulty. Analyses of the performance and workload data did not reveal significant differences in Trial 3 as a function of prior task difficulty presented in Trial 2. The inability to find workload context effects in the present study suggests that previous inconsistent findings can not be attributed to differences in task duration and experimental design. Rather, it appears that contradictory results may be attributable to differences in the range of task difficulty employed, the workload measurement tool, or both.”

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Jun 18

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

Help us help you!

 
 
 
 
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