Constructs a human experimental model to test empirically Harrington's hypothesis of race differences. According to Harrington, by developing homogenous ethnic tests each ethnic group should score in the direction of less pathology on their dedicated test. Results indicate that Harrington's proposed effect is not evident for this set of behavioral…

The Peabody Individual Achievement Test was factor analyzed at five grade levels. Subtests composing each factor changed from the lower to upper grade levels, but abilities measured by each factor appeared constant. A close similarity between the two factors and Cattell's concept of fluid and crystallized intelligence was noted. (Author)

Investigated the criterion-related validity of the Kaufman Assessment Battery for Children (K-ABC), predicting reading comprehension, arithmetic, and general achievement, for large samples of blacks and whites tested during the standardization of the battery. The Sequential and Mental Processing Composite scales tended to overpredict black…

Describes a method that uses age equivalents and standard scores to recreate the full range of variability in the scores of low-functioning individuals. The method allows for a more complete interpretation of performance that can lead to better educational and therapeutic programming. (Author/MCF)

Assessed sex differences in performance on the subtests of the Kaufman Assessment Battery for Children using more than 2,500 children ages 2-1/2 to 12-1/2 years old. Results confirmed previous research with female superiority on short-term memory tasks and male superiority on spatial-visualization skills. (Author/ABL)

Analyzed data from standardization sample of 1981 Wechsler Adult Intelligence Scale-Revised (WAIS-R) to determine relationships of WAIS-R intelligence quotients (IQs) to demographic variables upon which sample was stratified. Found significant differences in mean IQs due to race and education level; sizeable differences for occupational groups;…

Categorized research articles appearing in five major journals from 1974 to 1980. Results indicated a significant change in content of articles. Articles concerning instrument development and validation account for the relatively largest percentage of total articles. Schools and agencies primarily contributing to this research are identified. (JAC)

Principal factor solutions to the WISC-R were compared across race for Anglo and Chicano children. Additional comparisons of factor solutions were made with those for Anglo, Chicano, Black, and Papago students and the WISC-R standardization sample. Substantial congruence occurred across race. The two-factor solution was most appropriate for this…

Major preschool tests (N=7) were administered and the results studied to find evidence of racial or sex bias. No evidence of sexual or racial dimorphism in the early structure of cognitive abilities was discovered. (Author/LAB)

The use of grade equivalent scores contrasted against grade placement is widespread in the diagnosis of dyslexia and other reading disabilities. Discusses difficulties and distortions of this method. Presents an alternative method for reliably determining aptitude/achievement discrepancies. (Author)