Working memory impairments in schizophrenia: A meta-analysis

Academic Article


  • Working memory (WM) deficit is a cardinal cognitive symptom of schizophrenia, but the differences among the tasks and measures used to assess WM make it difficult to compare across studies. The authors conducted a meta-analytic review to address 3 major questions: (a) Do patients with schizophrenia show WM deficits across diverse methodology; (b) Is WM deficit supramodal; and (c) Does the WM deficit worsen with longer delays? The results indicate that significant WM deficit was present in schizophrenia patients in all modalities examined. Increasing delay beyond 1 s did not influence the performance difference between schizophrenia patients and healthy control participants in WM. These results suggest that WM deficit in schizophrenia is modality independent and that encoding and/or early part of maintenance may be, problematic. Copyright 2005 by the American Psychological Association.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Lee J; Park S
  • Start Page

  • 599
  • End Page

  • 611
  • Volume

  • 114
  • Issue

  • 4