Comparison of the mental status of 30 subjects with Down's Syndrome mosaicism and 30 matched subjects with trisomy 21 Down's Syndrome found that the mean intelligent quotient of the mosaic Down's Syndrome group was significantly higher and that this group showed better verbal abilities and more normal visual-perceptual skills. (Author/DB)

To assess the effects of individual attentional focus differences on measures of mental skills, distractibility was studied for 272 first- and second-year college undergraduates through a speeded visual search task and tests of mental and verbal ability. Results suggest that perceptual/attentional factors are an important aspect of measured…

This paper reviews the research on sex differences in intellectual functioning as it relates to verbal abilities, spatial abilities, and reading aptitudes. Research supports such statements as: sex aptitudes do not become significantly apparent until adolescence; males perform better than females on problems involving field-indep (picking out one…

Although universally acknowledged to be important, the relation between language and cognition is far from clear. While this paper also "sidesteps" this relation, it presumes that less elaborate language is linked to less differentiated cognitive activity. The study described here was aimed at collecting data on language usage for children (and…

Obtained a hierarchical factor solution on the Wechsler Adult Intelligence Scale-Revised (WAIS-R) subtest intercorrelations for the nine age groups included in the standardization sample. Findings support the validity of the WAIS-R as a measure of general intelligence and the validity of maintaining separate Verbal and Performance IQs. (Author)

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)

In addition to ethnic origin, the subjects were further grouped by social class, middle and lower only. Social Class was a more important factor than ethnic origin in WISC differences; and, nonverbal ability differences (Cohen factors) were found to relate only to S's membership in a particular social class." (DB)

Detailed analysis of the reactions to training and of the verbal regulation of behavior scores of subjects from a remote Indian reserve showed that the low IQ of this group resulted from an underdevelopment of reflective verbal thought, but not from a biologically determined inadequacy. (Authors)

Analysis of correlations between Verbal and Full Scale IQ scores for 231 high-IQ psychiatric outpatients indicated that Verbal IQ appears partially valid as a WAIS short form for this higher IQ group. Results are interpreted in terms of Resnick and Entin's short form validity criteria. (Editor/SJL)

Patterns of intellectual ability of Arab children aged 6 to 16 years were examined using the new Arab WISC-R. As in prior work, a distinct profile emerged: relative superiority in Verbal over Performance IQ's which diminished with age as a flat profile emerged in adolescence. An environmental explanation is offered. (Author/RD)

Suggests that the general ability structure for retardates is more complex than the structure for normals, containing a "stimulus trace" factor in addition to verbal-educational and spatial-perceptual parameters. (RL)

A study of twins was conducted to determine the presence of an hereditary component in short term memory and in three aspects of verbal divergent thinking--flexibility, fluency, and originality. Results showed the existence of a significant genetic component in the trait of short term memory, while none was found in verbal divergent thinking. (AG)

Relationships between six home environment measures, achievement and intelligence tests were examined by stepwise multiple regression analyses for a sample of 60 eight-year old children. Home variables were most successful in predicting achievement test scores, less successful regarding culture-dependent intelligence test scores, and least…

Until the 1970s, there were few signs of change in the historic difference of one standard deviation between average ability or achievement test scores of black and white students. From 1970 to the mid-to-late 1980s, there was a substantial convergence of the average achievement test scores of blacks and whites. From the mid-to-late 1980s to 1992,…