The authors applied linear dynamic models to longitudinal data to examine the dynamics of reading and cognition from 1st to 12th grade. They used longitudinal data (N=445) from the Connecticut Longitudinal Study (S. E. Shaywitz, B. A. Shaywitz, J. M. Fletcher, & M. D. Escobar, 1990) to map the dynamic interrelations of various scales of the…

This study examined the effects of prenatal cocaine exposure, environmental risk, and maternal verbal intelligence on children's cognitive ability. Gender and age were examined as moderators of potential cocaine exposure effects. The Stanford-Binet IV intelligence test was administered to 231 children (91 cocaine exposed, 140 unexposed) at ages 4,…

Evaluated the extent to which the Graduate Record Examinations General Test measures the same constructs for older test takers that it does for younger examinees. Results suggest that the convergent validity of the test is similar across the age groups, but discriminant validity is somewhat different for older examinees. (Author/RWB)

Elementary school children were tested individually on their learning of mathematics and on Piagetian tests of concrete operations. Younger children were found to be inferior to older children in their success on learning tasks. (ST)

Appraised cognitive patterning and development for 142 pairs of twins at 4, 5, and 6 years of age. From the results it was inferred that within a broad range of home environments, the genotype exerts a significant influence on the child's cognitive development. (Author/SDH)

The dissimilarity between the black and the white voices failed to affect the IQ scores of black children, but it appeared to be an important variable with regard to the IQ test performance of white children. (Author)

Findings lend support for further development of the Manikin Construction Task for the purpose of measuring specific conceptual knowledge at all ages. There is also support for its development as an intellectual screening instrument at the 3-year level. (Author)

Examined 114 pairs of same-sex infant twins and their parents to investigate infant predictors of adult IQ. Found that some measures of infants' information processing, language ability, and temperament predicted the average IQ of infants' parents. Results support the view that some stability in certain types of intellectual functioning from…

An intelligence test was administered twice to 42 black preschool children by both black and white female examiners. Results showed that the children earned higher mean scores when tested by the black examiner; the effect was significant for the Verbal, Performance, and Full-Scale IQs. (SDH)

Review of the factor matrix indicated that Piagetian reasoning tasks involve abilities separate from those measured by standard tests of intelligence and achievement. (Authors)

Since early research had shown that a total score on 27 Piagetian tasks was very highly correlated with a Wechsler and achievement composite, a study investigated the possibility of shortening the Piagetian test by means of classical analysis methodology. (HOD)

Findings indicate that white examiners do not depress IQ scores of black children. (MB)

Reports longitudinal data on the link between the affective quality of the mother-child relationship and school-relevant cognitive performance. Sixty-seven mothers and their children participated in the first (preschool) phase of the study; 47 mothers were included in a follow-up when children were 12 years old. (Author/BN)

Reviews the literature on the relationship between schooling, IQ, and the cognitive processes presumed to underpin IQ. The data suggest the importance of quantity of schooling for IQ. Schooling fosters the development of cognitive processes that underpin performance on IQ tests. This development is unrelated to the quality of schools. (BC)