TITLE

Effects of extensive dual-task practice on processing stages in simultaneous choice tasks

AUTHOR(S)
Strobach, Tilo; Liepelt, Roman; Pashler, Harold; Frensch, Peter; Schubert, Torsten
PUB. DATE
July 2013
SOURCE
Attention, Perception & Psychophysics;Jul2013, Vol. 75 Issue 5, p900
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Schumacher et al. Psychological Science 12:101-108, () demonstrated the elimination of most dual-task costs ('perfect time-sharing') after extensive dual-task practice of a visual and an auditory task in combination. For the present research, we used a transfer methodology to examine this practice effect in more detail, asking what task-processing stages were sped up by this dual-task practice. Such research will be essential to specify mechanisms associated with the practice-related elimination of dual-task costs. In three experiments, we introduced postpractice transfer probes focusing on the perception, central response-selection, and final motor-response stages. The results indicated that the major change achieved by dual-task practice was a speed-up in the central response-selection stages of both tasks. Additionally, perceptual-stage shortening of the auditory task was found to contribute to the improvements in time-sharing. For a better understanding of such time-sharing, we discuss the contributions of the present findings in relation to models of practiced dual-task performance.
ACCESSION #
88367918

 

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