Orthogonal Higher Order Factor Structure of the Stanford-Binet Intelligence Scales—Fifth Edition for Children and Adolescents

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Abstract

Orthogonal higher-order factor structure of the Stanford-Binet Intelligence Scales-Fifth Edition (SB-5; Roid, 2003a) for child and adolescent samples is reported. Multiple criteria for factor extraction unanimously supported extraction of only one dimension and a unidimensional model. However, following results from DiStefano and Dombrowski (2006) and theoretical consideration, two factors were extracted and obliquely rotated and further subjected to the Schmid and Leiman (1957) procedure using MacOrtho (Watkins, 2004). Results showed that the largest portions of total and common variance were accounted for by the second-order, global (‘g’) factor and interpretation of the SB-5 should focus primarily, if not exclusively, on the general, Full Scale IQ. No evidence for a five-factor solution was found.

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