Demand Transitions and Sustained Attention |
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| Authors: | Jonathan P Gluckman Joel S Warm William N Dember Roger R Rosa |
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| Institution: | 1. University of Cincinnati , USA;2. JJM Systems, Inc. , Arlington, VA, USA;3. University of Cincinnati , USA;4. National Institute for Occupational Safety and Health, Taft Laboratory , Cincinnati, OH, USA |
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| Abstract: | A recent report by the National Research Council (Huey & Wickens, 1993) has identified transitions in task demand as an important dimension for study in vigilance research. This experiment tested the possibility that the effects of such transitions follow a relatively simple psychophysical rule—they are characterized by contrast effects. Transitions in task demand were achieved by shifting subjects from single-task to dual-task monitoring and vice versa. These transitions produced changes in subjects' sensing and decision-making functions that were far more intricate than simple contrast effects. The demand transition issue offers a complex research challenge on both basic and applied levels and warrants further investigation. |
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| Keywords: | activational effects content specificity estrogen working memory |
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