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Identification of Factor Models for the Wisc-Iii

1994; SAGE Publishing; Volume: 54; Issue: 1 Linguagem: Inglês

10.1177/0013164494054001023

1552-3888

Randy W. Kamphaus, Jeri Benson, Susan Hutchinson, Leslie Oliver Platt,

Psychological Testing and Assessment

Confirmatory factor analysis was used to test three models of the WISC-III including Wechsler's original two-factor conceptualization, Kaufman's three-factor model, and the four-factor model proposed in the WISC-III manual. Correlation matrixes and standard deviations for the standardization sample for age groups 6 to 16 provided in the WISC-III manual were used as input to LISREL 7 to test the three models. Statistically, none of the models fit the data very well except for the three-factor and four-factor models for ages 6 and 9. However, incremental fit and cross-validation indexes showed the four factor model fit the data better for all age groups. Because there is no psychological theory to support the four-factor conceptualization of the new WISC-III, additional theoretical and empirical research is needed to clarify the third and fourth factors. Until such research is conducted, these factors remain enigmatic and bring into question their usefulness for clinical and research efforts.