Computational and empirical simulations of selective memory impairments: Converging evidence for a single-system account of memory dissociations.
Current theory has divided memory into multiple systems, resulting in a fractionated account of human behaviour. By an alternative perspective, memory is a single system. However, debate over the details of different single-system theories has overshadowed the converging agreement among them, slowin...
| Publicado en: | Quarterly Journal of Experimental Psychology Vol. 72; no. 4; pp. 798 - 818 |
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| Autores principales: | , |
| Formato: | Artículo |
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Sage Publications Inc.
Apr2019
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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=135522088&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 135522088 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 17470218 1US5 jtl: Quarterly Journal of Experimental Psychology issn: 17470218 maglogo: Y pubinfo: dt: Apr2019 vid: 72 iid: 4 pid: 344 pub: Sage Publications Inc. artinfo: ui: 135522088 10.1177/1747021818768502 ppf: 798 ppct: 20 formats: tig: atl: Computational and empirical simulations of selective memory impairments: Converging evidence for a single-system account of memory dissociations. aug: au: Curtis, Evan T. Jamieson, Randall K. affil: Department of Psychology, Booth University College, Winnipeg, Manitoba, Canada Department of Psychology, University of Manitoba, Winnipeg, Manitoba, Canada su: Memory Disabilities Implicit memory Explicit memory Evidence Amnesia sug: subj: Memory Disabilities Implicit memory Explicit memory Evidence Amnesia keyword: amnesia classification dissociation recognition amnesia classification dissociation recognition ab: Current theory has divided memory into multiple systems, resulting in a fractionated account of human behaviour. By an alternative perspective, memory is a single system. However, debate over the details of different single-system theories has overshadowed the converging agreement among them, slowing the reunification of memory. Evidence in favour of dividing memory often takes the form of dissociations observed in amnesia, where amnesic patients are impaired on some memory tasks but not others. The dissociations are taken as evidence for separate explicit and implicit memory systems. We argue against this perspective. We simulate two key dissociations between classification and recognition in a computational model of memory, A Theory of Nonanalytic Association. We assume that amnesia reflects a quantitative difference in the quality of encoding. We also present empirical evidence that replicates the dissociations in healthy participants, simulating amnesic behaviour by reducing study time. In both analyses, we successfully reproduce the dissociations. We integrate our computational and empirical successes with the success of alternative models and manipulations and argue that our demonstrations, taken in concert with similar demonstrations with similar models, provide converging evidence for a more general set of single-system analyses that support the conclusion that a wide variety of memory phenomena can be explained by a unified and coherent set of principles. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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