WISC-III scores of 233 students (ages 9 to 13) with mental retardation were examined. Boys had higher Full Scale, Verbal, and Performance IQs than did girls. Boys also had higher scores on six of the 10 subtests. In addition, all of the statistically significant differences were in favor of boys. (Author/CR)

This report summarizes the results of the administration of the vocabulary and Block Design subtests of the WISC to a national probability sample of noninstitutionalized youths 12 through 17 years of age. Information is presented on the derivation of percentile equivalents, normalized scale scores, and a short-form estimate of Face Scale Scores.…

Groups of 270 Black and 270 White children drawn from the national stratified random sample used in the standardization of the Wechsler Intelligence Scale for Children-Revised (WISC-R) were matched on age, sex, and WISC-R Full-Scale Intelligence Quotient to facilitate investigation of the patterns of specific cognitive abilities. (Author)

WISC-III IQs and subtest scaled scores of 440 students with specific learning disabilities were examined for gender differences. Boys exhibited statistically higher Full Scale, Verbal, and Performance IQs than did girls, as well as higher scores on six of seven subtests. Girls outperformed boys only on the Coding subtest. (Author/CR)

Though some unexpected sex differences were discovered, the two diagnostic categories were not found to be psychometrically distinct. Further, the results of a longitudinal analysis suggested that, while IQ scores remained relatively stable over time within a subset of the original sample, achievement scores definitely declined. (Author)

While debates over the heritability of IQ and the potential for culture bias in measuring instruments have generated much research and public comment, it is also possible to investigate the significance of interracial differences in mean IQ by ignoring both the foregoing issues and instead examining the social psychology of the test situation…

A wide array of data was gathered in a nationwide study, including parent and child interviews, intelligence test and achievement test scores, and teacher ratings of children's classroom performance. Results indicated extensive differences favoring intact family children, which persisted when IQ and socioeconomic status measures were controlled.…

This study examines cultural bias in the Wechsler Intelligence Scale for Children. Results indicated no evidence of specific factors peculiar to Blacks v Whites, and rank order of item difficulties was similar in both groups. Race differences were due to differences in mental maturity rather than to test bias. (Author/RD)