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WAIS-IV profile of cognition in schizophrenia.
- Source :
-
Assessment [Assessment] 2013 Aug; Vol. 20 (4), pp. 462-73. Date of Electronic Publication: 2013 Feb 26. - Publication Year :
- 2013
-
Abstract
- The Wechsler Adult Intelligence Scale (WAIS) has been used extensively to study impairment across a range of cognitive domains in schizophrenia. However, cognitive performance among those with the illness has yet to be examined using the newest edition of this measure. Hence, the current study aims first, to provide WAIS-IV normative data for Canadian individuals with schizophrenia of low average intelligence; second, to examine schizophrenia performance on all WAIS-IV subtest, index and general intelligence scores relative to healthy comparison subjects; and third, to revalidate the pattern of impairment identified in this clinical group using the WAIS-III, where processing speed (PS) was most affected, followed by working memory (WM), perceptual reasoning (PR) and verbal comprehension (VC). The WAIS-IV was administered to outpatients with schizophrenia and their performance compared with age, gender, and education matched controls. WAIS-IV schizophrenia performance data are provided. Analyses revealed significant impairment on several tasks, including the new Cancellation subtest and the VC supplemental subtest, Comprehension. At the index score level, group differences in PS were significantly larger than those observed in all other cognitive domains. Impairments were also observed in WM amid relatively preserved performance in VC, thereby confirming the pattern of impairment identified using the WAIS-III.
- Subjects :
- Adolescent
Adult
Aged
Aged, 80 and over
Case Management
Cognition Disorders rehabilitation
Community Mental Health Centers
Comprehension
Female
Humans
Male
Memory, Short-Term
Middle Aged
Ontario
Psychometrics statistics & numerical data
Psychotic Disorders rehabilitation
Reaction Time
Reference Values
Reproducibility of Results
Schizophrenia rehabilitation
Young Adult
Cognition Disorders diagnosis
Cognition Disorders psychology
Psychotic Disorders diagnosis
Psychotic Disorders psychology
Schizophrenia diagnosis
Schizophrenic Psychology
Wechsler Scales statistics & numerical data
Subjects
Details
- Language :
- English
- ISSN :
- 1552-3489
- Volume :
- 20
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Assessment
- Publication Type :
- Academic Journal
- Accession number :
- 23443820
- Full Text :
- https://doi.org/10.1177/1073191113478153