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Database: PubMed
Entry: 20037766
LinkDB: 20037766
Original site: 20037766 
PMID:
     20037766
Authors:
     Grange JA, Houghton G.
Title:
     Cue-switch costs in task-switching: cue priming or control processes?
Journal:
     Psychol Res. 2010 Sep;74(5):481-90. doi: 10.1007/s00426-009-0270-y.
Abstract:
     In the explicitly cued task-switching paradigm, two cues per task allow 
     separation of costs associated with switching cues from costs of switching tasks. 
     Whilst task-switch costs have become controversial, cue-switch costs are robust. 
     The processes that contribute to cue-switch costs are under-specified in the 
     literature: they could reflect perceptual priming of cue properties, or priming 
     of control processes that form relevant working memory (WM) representations of 
     task demands. Across two experiments we manipulated cue-transparency in an 
     attention-switching design to test the contrasting hypotheses of cue-switch 
     costs, and show that such costs emerge from control processes of establishing 
     relevant WM representations, rather than perceptual priming of the cue itself. 
     When the cues were maximally transparent, cue-switch costs were eradicated. We 
     discuss the results in terms of recent theories of cue encoding, and provide a 
     formal definition of cue-transparency in switching designs and its relation to WM 
     representations that guide task performance.

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