Categorization and recognition performance of a memory-impared group

Evidence for single-system models

Safa R. Zaki, Robert M. Nosofsky, Nenette M. Jessup, Frederick Unverzagt

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Previous research has demonstrated dissociations between categorization and recognition performance in amnesic patients, supporting the idea that separate memory systems govern these tasks. However, previous research has also demonstrated that these dissociations are predicted by a single-system model that allows for reasonable parameter differences across groups. Generally, previous studies have employed categorization tasks that are less demanding than the recognition tasks. In this study, we distinguish between single-system and multiple-system accounts by testing memory-impaired individuals in a more demanding categorization task. These patients, just like previous amnesic participants, show a dissociation between categorization and recognition when tested in previously employed paradigms. However, they display a categorization deficit when tested in the more challenging categorization task. The results are interpreted as support for a single-system framework in which categorization and recognition depend on one representational system.

Original languageEnglish
Pages (from-to)394-406
Number of pages13
JournalJournal of the International Neuropsychological Society
Volume9
Issue number3
DOIs
StatePublished - Mar 2003

Fingerprint

Research
Recognition (Psychology)

Keywords

  • Categorization
  • Categorization recognition dissociations
  • Memory impairment
  • Recognition

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology
  • Psychiatry and Mental health
  • Neuroscience(all)
  • Psychology(all)

Cite this

Categorization and recognition performance of a memory-impared group : Evidence for single-system models. / Zaki, Safa R.; Nosofsky, Robert M.; Jessup, Nenette M.; Unverzagt, Frederick.

In: Journal of the International Neuropsychological Society, Vol. 9, No. 3, 03.2003, p. 394-406.

Research output: Contribution to journalArticle

@article{186f54b4e6544819a19cc75e7e6dba4a,
title = "Categorization and recognition performance of a memory-impared group: Evidence for single-system models",
abstract = "Previous research has demonstrated dissociations between categorization and recognition performance in amnesic patients, supporting the idea that separate memory systems govern these tasks. However, previous research has also demonstrated that these dissociations are predicted by a single-system model that allows for reasonable parameter differences across groups. Generally, previous studies have employed categorization tasks that are less demanding than the recognition tasks. In this study, we distinguish between single-system and multiple-system accounts by testing memory-impaired individuals in a more demanding categorization task. These patients, just like previous amnesic participants, show a dissociation between categorization and recognition when tested in previously employed paradigms. However, they display a categorization deficit when tested in the more challenging categorization task. The results are interpreted as support for a single-system framework in which categorization and recognition depend on one representational system.",
keywords = "Categorization, Categorization recognition dissociations, Memory impairment, Recognition",
author = "Zaki, {Safa R.} and Nosofsky, {Robert M.} and Jessup, {Nenette M.} and Frederick Unverzagt",
year = "2003",
month = "3",
doi = "10.1017/S1355617703930050",
language = "English",
volume = "9",
pages = "394--406",
journal = "Journal of the International Neuropsychological Society",
issn = "1355-6177",
publisher = "Cambridge University Press",
number = "3",

}

TY - JOUR

T1 - Categorization and recognition performance of a memory-impared group

T2 - Evidence for single-system models

AU - Zaki, Safa R.

AU - Nosofsky, Robert M.

AU - Jessup, Nenette M.

AU - Unverzagt, Frederick

PY - 2003/3

Y1 - 2003/3

N2 - Previous research has demonstrated dissociations between categorization and recognition performance in amnesic patients, supporting the idea that separate memory systems govern these tasks. However, previous research has also demonstrated that these dissociations are predicted by a single-system model that allows for reasonable parameter differences across groups. Generally, previous studies have employed categorization tasks that are less demanding than the recognition tasks. In this study, we distinguish between single-system and multiple-system accounts by testing memory-impaired individuals in a more demanding categorization task. These patients, just like previous amnesic participants, show a dissociation between categorization and recognition when tested in previously employed paradigms. However, they display a categorization deficit when tested in the more challenging categorization task. The results are interpreted as support for a single-system framework in which categorization and recognition depend on one representational system.

AB - Previous research has demonstrated dissociations between categorization and recognition performance in amnesic patients, supporting the idea that separate memory systems govern these tasks. However, previous research has also demonstrated that these dissociations are predicted by a single-system model that allows for reasonable parameter differences across groups. Generally, previous studies have employed categorization tasks that are less demanding than the recognition tasks. In this study, we distinguish between single-system and multiple-system accounts by testing memory-impaired individuals in a more demanding categorization task. These patients, just like previous amnesic participants, show a dissociation between categorization and recognition when tested in previously employed paradigms. However, they display a categorization deficit when tested in the more challenging categorization task. The results are interpreted as support for a single-system framework in which categorization and recognition depend on one representational system.

KW - Categorization

KW - Categorization recognition dissociations

KW - Memory impairment

KW - Recognition

UR - http://www.scopus.com/inward/record.url?scp=0037350105&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037350105&partnerID=8YFLogxK

U2 - 10.1017/S1355617703930050

DO - 10.1017/S1355617703930050

M3 - Article

VL - 9

SP - 394

EP - 406

JO - Journal of the International Neuropsychological Society

JF - Journal of the International Neuropsychological Society

SN - 1355-6177

IS - 3

ER -