What causes dual-task costs?

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...

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Bibliographic Details
Main Author: Halvorson, Kimberly Mae
Other Authors: Hazeltine, Eliot
Format: Others
Language:English
Published: University of Iowa 2013
Subjects:
Online Access:https://ir.uiowa.edu/etd/1331
https://ir.uiowa.edu/cgi/viewcontent.cgi?article=5370&context=etd