Cited by 144Schizophrenia research and treatmentCognitive Abilities and TestingNeural and Behavioral Psychology Studies

Reduced Capacity but Spared Precision and Maintenance of Working Memory Representations in Schizophrenia

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Gold, James M., Hahn, Britta, Zhang, Wei Wei, Robinson, Benjamin M., Kappenman, Emily S., Beck, Valerie M., Luck, Steven J.·2010·Archives of General Psychiatry

Abstract

CONTEXT: Working memory deficits are considered a core feature of schizophrenia. Several recent integrative articles have offered mechanistic computational and neurobiological models of the origins of this cognitive deficit. OBJECTIVE: To test predictions of these models using a new experimental paradigm from the basic science literature that makes it possible to determine whether patients with schizophrenia show (1) deficits in working memory storage capacity, (2) deficits in the precision of working memory representations, and (3) an amplification of these deficits as the retention interval increases. DESIGN: Case-control design. All subjects performed a color working memory test in which they were asked to recall 3 or 4 items after a 1- or 4-second delay. All subjects also received a standard measure of intelligence and the Matrics Consensus Cognitive Battery. SETTING: A tertiary care research outpatient clinic. Patients A total of 31 clinically stable patients with a DSM-IV diagnosis of schizophrenia or schizoaffective disorder and 26 healthy volunteers participated. The 2 groups were similar in age, sex, and ethnicity distribution. MAIN OUTCOME MEASURES: (1) The number of items stored in working memory and (2) the precision of the working memory representations. RESULTS: Patients showed a clear reduction in the number of items stored in working memory. Patients did not differ from controls in the precision of their working memory representations. There was no evidence of delay-related amplification of impairment in either capacity or precision. CONCLUSIONS: Patients do not show the type of imprecision or delay-dependent amplification of impairment that is predicted on the basis of current models of the neurobiology of schizophrenia. The models need to be revised to account for a pure reduction in the number of items that patients are able to store in working memory.

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Research works printed but not linked: 4

  1. [5]Baddeley AD Working Memory Clarendon Oxford 1986
  2. [6]Miyake A Shah P Models of Working Memory Cambridge, UK Cambridge University Press 1999
  3. [31]First MB Spitzer RL Gibbon M Williams JBW Structured Clinical Interview for DSM-IV- Axis I Disorders (SCID-I) Washington, DC American Psychiatric Press 1997
  4. [48]Vogel EK Woodman GF Luck SJ Storages of features, conjunctions and objects in visual working memory Journal of Experimental Psychology: Human Perception and Performance 2001 27 1 92 114 11248943

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Authors
Gold, J. M., Hahn, B., Zhang, W. W., Robinson, B. M., Kappenman, E. S., Beck, V. M., & Luck, S. J.
Affiliations
  • University of Maryland, Baltimore (US)
  • University of California, Davis (US)
Venue
Archives of General Psychiatry
Published
2010-06-01
Volume
67
Issue
6
Pages
570
ISSN
0003-990X (ISSN-L)
OpenAlex
W2105397762
Cited by
144
References
49
Citations by year
2026: 2 · 2025: 3 · 2024: 5 · 2023: 5 · 2022: 7 · 2021: 6 · 2020: 9 · 2019: 13 · 2018: 9 · 2017: 19 · 2016: 6 · 2015: 9 · 2014: 7 · 2013: 16 · 2012: 13
FWCI
9.62
Type
journal article
Language
en
Open access
Locations
  • Archives of General Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
  • National Institute of Mental Health (MH065034, R01MH076226, R01MH065034)
  • National Center for Research Resources (M01RR016500)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
schizophrenia, working memory, working memory precision, retention interval, schizoaffective disorder, cognitive impairment
MeSH terms
Adult, Cognition Disorders, Color Perception, Female, Humans, Male, Memory Disorders, Memory, Short-Term, Models, Neurological, Neuropsychological Tests, Psychotic Disorders, Reaction Time, Retention, Psychology, Schizophrenia, Schizophrenic Psychology, Case-Control Studies, Prefrontal Cortex

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