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Simultaneous dual-task performance reveals parallel response selection after practiceE. H. Schumacher, T. L. Seymour, J. M. Glass, D. E. Kieras, and D. E. Meyer (2001) reported that dual-task costs are minimal when participants are practiced and give the 2 tasks equal emphasis. The present research examined whether such findings are compatible with the operation of an efficient response selection bottleneck. Participants trained until they were able to perform both tasks simultaneously without interference. Novel stimulus pairs produced no reaction time costs, arguing against the development of compound stimulus-response associations (Experiment 1). Manipulating the relative onsets (Experiments 2 and 4) and durations (Experiments 3 and 4) of response selection processes did not lead to dual-task costs. The results indicate that the 2 tasks did not share a bottleneck after practice.
Document ID
20040088260
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hazeltine, Eliot
(NASA Ames Research Center Moffett Field CA United States)
Teague, Donald
Ivry, Richard B.
Date Acquired
August 21, 2013
Publication Date
June 1, 2002
Publication Information
Publication: Journal of experimental psychology. Human perception and performance
Volume: 28
Issue: 3
ISSN: 0096-1523
Subject Category
Behavioral Sciences
Funding Number(s)
CONTRACT_GRANT: NS30256
CONTRACT_GRANT: NS1778
Distribution Limits
Public
Copyright
Other

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