Task switching: a PDP model.
When subjects switch between a pair of stimulus–response tasks, reaction time is slower on trial N if a different task was performed on trial N - 1. We present a parallel distributed processing (PDP) model that simulates this effect when subjects switch between word reading and color naming in respo...
| Publicado en: | Cognitive Psychology Vol. 44; no. 3; pp. 297 - 338 |
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| Autores principales: | , |
| Formato: | Artículo |
| Publicado: |
Academic Press Inc.
May 2002
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=507763756&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 507763756 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00100285 COP jtl: Cognitive Psychology issn: 00100285 maglogo: N pubinfo: dt: May 2002 vid: 44 iid: 3 pid: 735 pub: Academic Press Inc. artinfo: ui: 507763756 10.1006/cogp.2001.0770 ppf: 297 ppct: 41 formats: tig: atl: Task switching: a PDP model. aug: au: Gilbert, Sam J. Shallice, Tim su: Stimulus & response (Biology) Reaction time Cognitive interference Stroop Color & Word Test sug: subj: Stimulus & response (Biology) Reaction time Cognitive interference Stroop Color & Word Test ab: When subjects switch between a pair of stimulus–response tasks, reaction time is slower on trial N if a different task was performed on trial N - 1. We present a parallel distributed processing (PDP) model that simulates this effect when subjects switch between word reading and color naming in response to Stroop stimuli. Reaction time on “switch trials” can be slowed by an extended response selection process which results from (a) persisting, inappropriate states of activation and inhibition of task-controlling representations; and (b) associative learning, which allows stimuli to evoke tasks sets with which they have recently been associated (as proposed by Allport & Wylie, 2000). The model provides a good fit to a large body of empirical data, including findings which have been seen as problematic for this explanation of switch costs, and shows similar behavior when the parameters are set to random values, supporting Allport and Wylie's proposal. Copyright 2001 Elsevier Science (USA). pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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