Why are dual-task costs reduced with ideomotor (IM) compatible tasks (see e.g. Greenwald & Shulman, 1973)? In a series of experiments, I tested the way in which task structure affects dual-task performance (Halvorson et al., 2012). The results suggest that in some cases, typical dual-task costs arise from task structure rather than response limitations. Further examination of this question has shown that dual-task costs cannot be predicted solely on the basis of the relationship between the stimuli and the responses; the relationship between the tasks, or the task pairing, plays a critical role in whether the tasks overlap and performance is impaired. A series of experiments using novel task pairings showed that when one task uses a spatial central code and the other uses a verbal central code, dual-task costs are eliminated.
Dissertation
What causes dual-task costs?
University of Iowa
Doctor of Philosophy (PhD), University of Iowa
Summer 2013
DOI: 10.17077/etd.1dpxsatz
Free to read and download, Open Access
Abstract
Details
- Title: Subtitle
- What causes dual-task costs?
- Creators
- Kimberly Mae Halvorson - University of Iowa
- Contributors
- Eliot Hazeltine (Advisor)Susan Wagner Cook (Committee Member)Toby Mordkoff (Committee Member)Kelly Cole (Committee Member)Shaun Vecera (Committee Member)Thomas Farmer (Committee Member)
- Resource Type
- Dissertation
- Degree Awarded
- Doctor of Philosophy (PhD), University of Iowa
- Degree in
- Psychology
- Date degree season
- Summer 2013
- Publisher
- University of Iowa
- DOI
- 10.17077/etd.1dpxsatz
- Number of pages
- viii, 211 pages
- Copyright
- Copyright 2013 Kimberly Mae Halvorson
- Language
- English
- Description illustrations
- illustrations (some color)
- Description bibliographic
- Includes bibliographical references (pages 193-211).
- Academic Unit
- Psychological and Brain Sciences
- Record Identifier
- 9983776829102771
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