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Stability of the WAIS‐R and WISC‐III factor structure using cross‐validation of covariance structures
Author(s) -
Allen Stephen R.,
Thorndike Robert M.
Publication year - 1995
Publication title -
journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.124
H-Index - 119
eISSN - 1097-4679
pISSN - 0021-9762
DOI - 10.1002/1097-4679(199509)51:5<648::aid-jclp2270510510>3.0.co;2-r
Subject(s) - goodness of fit , psychology , covariance , wechsler adult intelligence scale , wechsler intelligence scale for children , analysis of covariance , statistics , stability (learning theory) , factor analysis , consistency (knowledge bases) , developmental psychology , cognition , mathematics , artificial intelligence , machine learning , computer science , neuroscience
The stability of the Verbal Comprehension, Perceptual Organization, and Freedom from Distractibility factors of the WAIS‐R and WISC‐III was tested using cross‐validation of covariance structure models, a methodology that employs unrestricted and restricted factor analyses. Stability was indicated if the goodness of fit of restricted models generated from unrestricted factor patterns did not degrade when applied to other age groups. If goodness of fit degraded inconsistently, the factor structure of one or both instruments was unreliable. If goodness of fit changed in some systematic fashion, an argument for true intellectual changes could be made. Results indicated consistency across age groups. Therefore, it was concluded that the three‐factor structure is robust and reliable across age groups and instruments.