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S1-R2 and R1-R2 Backward Crosstalk Both Affect the Central Processing Stage Cover

S1-R2 and R1-R2 Backward Crosstalk Both Affect the Central Processing Stage

Open Access
|Oct 2020

Abstract

A frequent observation in dual-task experiments is that performance in Task 1 is influenced by conceptual or spatial overlap with features of Task 2. Such compatibility-based backward crosstalk effects (BCEs) can occur when overlap exists between the responses of two tasks–the R1-R2 BCE–or between the stimulus in Task 1 and the response in Task 2–the S1-R2 BCE. The present study investigated whether the S1-R2 BCE has a perceptual locus, and by implication, whether the two BCEs have a common processing locus or different ones. To this end, we applied the additive factors logic and manipulated the duration of the Task 1 perceptual stage. The results argue against a perceptual locus for both BCEs. As a possible explanation, we suggest that the R1-R2 BCE and the S1-R2 BCE have their locus within a capacity-limited central stage, but that they arise from different processes within this stage. The R1-R2 BCE influences Task 1 response selection, whereas the S1-R2 BCE influences Task 1 stimulus classification. A plausible though post-hoc model is presented within the Discussion.

DOI: https://doi.org/10.5334/joc.121 | Journal eISSN: 2514-4820
Language: English
Submitted on: Apr 30, 2020
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Accepted on: Aug 19, 2020
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Published on: Oct 6, 2020
Published by: Ubiquity Press
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2020 Valentin Koob, Moritz Durst, Daniel Bratzke, Rolf Ulrich, Markus Janczyk, published by Ubiquity Press
This work is licensed under the Creative Commons Attribution 4.0 License.