Neuropsychology Review

, Volume 15, Issue 2, pp 73–95

A Meta-Analysis of Cognitive Deficits in Adults with a Diagnosis of Schizophrenia

  • Mario Fioravanti
  • Olimpia Carlone
  • Barbara Vitale
  • Maria Elena Cinti
  • Linda Clare
Article

DOI: 10.1007/s11065-005-6254-9

Cite this article as:
Fioravanti, M., Carlone, O., Vitale, B. et al. Neuropsychol Rev (2005) 15: 73. doi:10.1007/s11065-005-6254-9

Abstract

This review identified 1275 studies examining cognitive deficits in people with schizophrenia, published between 1990 and 2003. Data from 113 studies (4365 patients and 3429 controls) were combined in a meta-analysis carried out on the five cognitive domains of IQ, memory, language, executive function, and attention. Studies were excluded where they lacked a suitable control group or failed to present complete information. In all five cognitive domains, analysis indicated a consistent trend for patients to perform more poorly than healthy controls, with significant heterogeneity across studies. Sources of heterogeneity were analyzed and a need to ensure more appropriate composition of patient and control groups and to adopt a more refined and methodologically correct, hypothesis-driven approach was identified.

Keywords

schizophreniacognitive deficitscontrolled studiesmemory

Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • Mario Fioravanti
    • 1
  • Olimpia Carlone
    • 1
  • Barbara Vitale
    • 1
  • Maria Elena Cinti
    • 1
  • Linda Clare
    • 2
  1. 1.Department of Psychiatric Science and Psychol. Med.University of Rome “La Sapienza”RomeItaly
  2. 2.School of PsychologyUniversity of Wales BangorBangorUnited Kingdom