Factor analysis of Wechsler adult Intelligence Scale-revised in developmentally disabled persons

Santo F. Di Nuovo, Serafino Buono

Research output: Contribution to journalArticle

Abstract

The results of previous studies on the factorial structure of Wechsler Intelligence Scales are somewhat inconsistent across normal and pathological samples. To study specific clinical groups, such as developmentally disabled persons, it is useful to examine the factor structure in appropriate samples. A factor analysis was carried out using the principal component method and the Varimax orthogonal rotation on the Wechsler Adult Intelligence Scale (WAIS-R) in a sample of 203 developmentally disabled persons, with a mean age of 25 years 4 months. Developmental disability ranged from mild to moderate. Partially contrasting with previous studies on normal samples, results found a two-factor solution. Wechsler's traditional Verbal and Performance scales seems to be more appropriate for this sample than the alternative three-factor solution.

Original languageEnglish
Pages (from-to)953-959
Number of pages7
JournalPsychological Reports
Volume99
Issue number3
DOIs
Publication statusPublished - Dec 2006

ASJC Scopus subject areas

  • Psychology(all)

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