Document Type

Dissertation

Date of Degree

2013

Degree Name

PhD (Doctor of Philosophy)

Degree In

Psychology

First Advisor

Eliot Hazeltine

Abstract

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.

Keywords

Dual-task costs, task structure

Pages

viii, 211 pages

Bibliography

Includes bibliographical references (pages 193-211).

Copyright

Copyright 2013 Kimberly Mae Halvorson

Included in

Psychology Commons

Share

COinS