Stephens et al. (EJ 055 112) committed a serious methodological error in holding chronological age constant in their IQ measures and allowing it to vary in their Piagetian developmental measures. This error is unrelated to differences in factor rotation methods used by these authors and was not answered in their reply. (CTM)

Describes the status of controversies regarding the definition of intelligence, its measurement, and the relative roles of heredity versus environment in the development of individual differences. Intelligence tests alone are inconclusive in examining individual children. (Author/BJV)

The Mayes Motor Free Compilation (MMFC) assesses mental ability in young (under age 2) children with motor disabilities. This study evaluated the concurrent validity of the MMFC by administering it and the Bayley Scales of Infant Development to normal children. Findings suggest that the MMFC provides a valid estimate of mental age, even without…

D.V. Cicchetti, A.S. Kaufman, and S.S. Sparrow (this issue) use six criteria to evaluate the published findings from seven different studies of PCB exposure and neuropsychological function. They point out a number of weaknesses or flaws in each study and conclude that these weaknesses make the overall conclusion that PCB exposure negatively…

Two studies examined modifiability in intellectual functioning in older adults. The fluid-crystallized theory provided a theory base for the research. (Fluid intelligence follows a normative decline through adulthood, while crystallized intelligence remains stable or even increases.) In the first study thirty subjects (average age 69.2)…

This paper reviews studies in which scores on Piagetian tests of logical thought were correlated with IQ, mental age (MA) and chronological age (CA), and examines the possible effects of the size of the age range and mean age of subjects on these correlations. The data included 44 groups of subjects obtained from 36 studies in which Piagetian and…

This paper presents three research studies. The first study investigated the use of boys' and girls' play areas, each stocked with sex-type toys, by day care children with male, female, or mixed teacher teams. Examined were the sex of play areas users and the effect of sex of teacher team on the structure of play in each play area. The second…

This study was designed to determine what happens to the intelligence quotient of freshman students during their enrollment at a private Negro college. The Otis Quick-Scoring Mental Ability Test, Gamma Em, was administered to 822 students from a population of approximately 2,000 in their freshman year at Hampton Institue, Hampton, Virginia. The…

A total of 24 four-year-old children were posed with the paired-associate task of learning where 9 different animals lived, using apparatus designed for self instruction through picture matching. In Experiment I, children, who were taught to prompt themselves as needed by referring to a picture book, attained almost perfect scores, significantly…

Analysis of scores of 118 visually impaired children on the Wechsler Intelligence Scale for Children (Revised) and the Wechsler Preschool and Primary Scales of Intelligence (Revised) found a consistent response pattern suggesting that the verbal as well as the performance tests provide useful assessment information. (Author/DB)

The Wechsler Adult Intelligence Scale-Revised (WAIS-R) and the Cognitive Test for the Blind were used to compare verbal and nonverbal abstraction ability of adults who became blind before age 2 or after age 5 (when expressive language would have been developed). No significant differences were found, but variability of scores on the WAIS-R…

Data from 30 national service centers found the number of assessment instruments endorsed increased as centers adopted a multidisciplinary approach to education and treatment, the largest proportion of instruments fell within intellectual, motor, and language/communication domains, and instruments were used most frequently for diagnostic and…

This report discusses the relationship between bilingualism and mental development of bilingual children. After a review of the relevant literature, a specific study is described. The linguistic background of 648 children from 29 schools, age 10 through 12 inclusive, was measured with the Welsh Linguistic Background Scale. General intelligence was…

Cognitive deficits in black and other minority children have been assumed, described, and then explained. In direct and indirect ways, the "evidence," especially in the broad public domain has been mounting to suggest a genetic cause for discovered differences between racial groups on test of aptitude and achievement. It is the purpose of the…

This report describes and evaluates a sequential Learning to Learn Program (L.L.P.) for four- and five-year-old children. The long-term plan was for these children to be kept in a continuous sequential program through the first grade. Since another aspect of this project is a systematic attempt to learn how differing lengths of exposure to the…