Publication year
2013Number of pages
6 p.
Source
Applied Neuropsychology - Adult, 20, 1, (2013), pp. 41-46ISSN
Publication type
Article / Letter to editor
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Organization
SW OW PWO [owi]
Medical Psychology
SW OZ DCC NRP
Journal title
Applied Neuropsychology - Adult
Volume
vol. 20
Issue
iss. 1
Languages used
English (eng)
Page start
p. 41
Page end
p. 46
Subject
DI-BCB_DCC_Theme 3: Plasticity and Memory; NCEBP 8 - Psychological determinants of chronic illness DCN PAC - Perception action and control; Neuropsychology and rehabilitation psychology; Neuro- en revalidatiepsychologieAbstract
The Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV; Wechsler, 2008 ) no longer provides the "traditional" Verbal IQ and Performance IQ deviation scores. In the current study, we investigated the structural validity of these scores in the scale's predecessor, the WAIS-Third Edition (WAIS-III; Wechsler, 1997c ), which is still widely used in clinical practice, especially outside the United States. Confirmative (CFA) and exploratory factor analyses (EFA) were performed on WAIS-III data from a Dutch sample of 247 psychiatric patients. Four competing models were tested in the CFA on 11 subtests. The model that fit the data best was a model in which subtests loaded on the four factor indexes (i.e., 3 Verbal Comprehension subtests, 3 Perceptual Organization subtests, 3 Working Memory subtests, and 2 Processing Speed subtests) as proposed by the manual (Wechsler, 1997b ). In the EFA on 13 subtests with four factors extracted, all subtests were found to load on the factors in accordance with the WAIS-III test manual. However, Picture Arrangement, Arithmetic, and Picture Completion showed only moderate loadings on the proposed factors. Implications for clinical practice are discussed.
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- Faculty of Social Sciences [30338]
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