The two featured articles and eight commentaries on the WISC-IV (Wechsler, 2003) and WAIS-IV (Wechsler, 2008) in this special issue of "Journal of Psychoeducational Assessment" are of exceptional quality. As a collective, this special issue greatly advances the field of cognitive assessment by intelligently synthesizing the best of…

We examined the degree to which the conventional notion of g associated with IQ tests and general cognitive ability tests ("COG-g") relate to the general ability that underlies tests of reading, math, and writing achievement ("ACH-g"). Two large, nationally representative data sets and two independent individually-administered…

Results were quite similar for each of the factor analytic procedures, an indication of a strong underlying structure of the WPPSI tests. Regardless of the factor analytic technique used, two factors appeared--one clearly verbal and the other clearly performance--at each of the three age levels. (Authors)

Data from 255 normal individuals were factor analyzed. Variables included subtests from the Wechsler Adult Intelligence Scale-Revised (WAIS-R), the Kaufman Adolescent and Adult Intelligence Test (KAIT), and two new brief measures. Results are interpreted in the context of previous Horn analyses of the KAIT and WAIS-R. (SLD)

The factor structure in this study was remarkably consistent across the age range, with three factors emerging for each group: Verbal Comprehension, Perceptual Organization, and Freedom from Distractibility. The results of the study are discussed in terms of their clinical applications, particularly interpretation of WISC-R profiles. (Author)

Learning Disabled children (N=198) were tested on both the WISC-R (Wechsler Intelligence Scale for Children-Revised) and K-ABC (Kaufman Assessment Battery for Children). Joint factor analysis produced three-factor and four-factor solutions. Factors corresponding to three K-ABC scales generally converged with three WISC-R factors. (Author/CL)

Overall findings were interpreted from a developmental perspective, and the data were shown to offer evidence for the contruct validity of the MSCA. (Author/RC)

The Wechsler Intelligence Scale for Children was administered to 80 retarded youngsters from ages 6 to 16 years. The factors found for the retarded children are similar to those found for normal children. This similarity suggests there may be no qualitative differences in intelligence structure for normal and retarded children. (Author/SJL)

A selective review of literature on the revised Wechsler Intelligence Scale for Children (WISC-R) is presented to relate research results to test interpretation. Included are inferences drawn from factor analyses, subtest specificity, subtest profiles for some exceptional populations assessment of minority group children, and IQ differences…

The construct validity of the Sequential Processing, Simultaneous Processing and Achievement scales of the Kaufman Assessment Battery for Children was supported by factor-analytic investigations of a representative national stratified sample of 2,000 children. Correlations provided insight into the relationship of sequential/simultaneous…

Factor-analyzed data are reported from the Kaufman Adolescent and Adult Intelligence Test for 1,535 whites, 226 African Americans, and 140 Hispanics. Factor structures yielded Fluid and Crystallized dimensions that were congruent across race and ethnic groups and provided construct validity for each subsample. (SLD)