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- Title
Bypassing the central bottleneck after single-task practice in the psychological refractory period paradigm: Evidence for task automatization and greedy resource recruitment.
- Authors
Maquestiaux, François; Laguë-Beauvais, Maude; Ruthruff, Eric; Bherer, Louis
- Abstract
In this research, the controversial issue of whether the central bottleneck can be bypassed through task automatization was investigated. To examine this issue, participants received six single-task practice sessions with an auditory-vocal task (low vs. high pitch). We then assessed dual-task performance using the analytically tractable psychological refractory period (PRP) paradigm, in which the highly practiced auditory-vocal task was presented as Task 2, along with an unpracticed visual-manual Task 1. The results provide evidence of bottleneck bypass for virtually all the participants (17 out of 20). Several converging tests suggest that the bottleneck re-emerged, however, in a follow-up experiment with tasks presented in the opposite order (auditory-vocal Task 1 and visual-manual Task 2). One possible explanation is that tasks greedily recruit central resources when avail- able, even though they can operate without central resources when unavailable.
- Subjects
BOTTLENECKS (Manufacturing); TASK performance; PERFORMANCE &; psychology; HUMAN experimentation in psychology; EXPERIMENTAL psychology; COGNITIVE psychology research; PSYCHOLOGICAL research; COGNITIVE psychology
- Publication
Memory & Cognition, 2008, Vol 36, Issue 7, p1262
- ISSN
0090-502X
- Publication type
Article
- DOI
10.3758/MC.36.7.1262