Bias effects in perceptual identification: a neuropsychological investigation of the role of explicit memory.
Identification of perceptually degraded words can be enhanced by prior exposure to those words. One theory proposes that such perceptual priming is due to a bias mechanism that induces costs as well as benefits in performance. Inherent in this theory is the critical assumption that bias effects obse...
| Publicado en: | Journal of Memory & Language Vol. 43; no. 2; pp. 316 - 335 |
|---|---|
| Autores principales: | , , |
| Formato: | Artículo |
| Publicado: |
Academic Press Inc.
August 2000
|
| Materias: | |
| 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=507711550&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 507711550 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 0749596X JMM jtl: Journal of Memory & Language issn: 0749596X maglogo: N pubinfo: dt: August 2000 vid: 43 iid: 2 pid: 735 pub: Academic Press Inc. artinfo: ui: 507711550 10.1006/jmla.2000.2732 ppf: 316 ppct: 19 formats: tig: atl: Bias effects in perceptual identification: a neuropsychological investigation of the role of explicit memory. aug: au: Keane, Margaret M. Verfaellie, Mieke Gabrieli, John D. E. su: Priming (Psychology) Amnesia sug: subj: Priming (Psychology) Amnesia ab: Identification of perceptually degraded words can be enhanced by prior exposure to those words. One theory proposes that such perceptual priming is due to a bias mechanism that induces costs as well as benefits in performance. Inherent in this theory is the critical assumption that bias effects observed in normal cognition reflect the operation of implicit rather than explicit memory processes. In the present study, we tested this assumption by examining the performance of amnesic patients in two paradigms that have elicited bias effects in normal participants. In Experiment 1, amnesic patients failed to show a normal bias pattern in a forced-choice perceptual identification paradigm, exhibiting benefits alone in performance. In Experiment 2, amnesic patients showed normal costs and benefits in a standard perceptual identification paradigm (without a forced-choice procedure). These results suggest that bias effects in normal cognition in the forced-choice perceptual identification paradigm are the product of explicit memory processes that are impaired in amnesia, but that bias effects in the standard paradigm are the product of implicit memory processes that are spared in amnesia. Copyright 2000 Academic Press. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|