In this article, time effects on intelligence test scores have been investigated. In particular, we examined whether the "Flynn effect" is manifest in children from the middle and higher IQ distribution range, measured with a child intelligence test based on information processing principles--the Leiden Diagnostic Test. The test was administered…

Lynn [Lynn, R., 2002. Sex differences on the progressive matrices among 15-16 year olds: some data from South Africa. "Personality and Individual Differences 33," 669-673.] proposed that biologically based developmental sex differences produce different IQ trajectories across childhood and adolescence. To test this theory we analyzed the…

To examine the relationship between superior intellectual functioning and physiological patterns and events during sleep, sleep records made on five consecutive nights and based on standard electrographic measures were made for 11 male children between 8 and 12 years of age. (RH)

This study provides guidelines for practitioners to determine the minimum differences, in scaled score points, needed for statistical significance when applying the Bannatyne recategorization of Wechsler Intelligence Scale for Children--Revised subtests on a individual basis. (Author)

The Rorschach was given to 60 school children in two designs: chronological age (CA) and mental age (MA) orthogonal and CA=MA. Responses were scored for Form Accuracy, Complexity, Movement and Friedman's Developmental Level (DL) Scoring System. The results suggest that the DL system does assess MA independently of CA. (Author/DEP)

In a review of heredity v environment theories, the author concludes that no individual, regardless of potential, can approach the full development of his or her abilities without exposure to an enriched environment. (Editor/SJL)

Tested 103 schoolchildren to investigate the hypothesis that the brightest students tend to have last names toward the beginning of the alphabet. Significant relationships between alphabetical position of surnames and intelligence were found, but the relationships existed only for third graders and were gone by the fifth grade. (DS)

A major criticism of standardized intelligence tests is their improper use in measuring the intellectual competence of culturally diverse children. Factors which complicate the issue are the definition of intelligence, content bias in intelligence tests, and the interpretation of test scores between white middle class children and children of…

This report contains national estimates of the prevalence of selected congenital and early development health problems. It describes the relationship of selected aspects of family background, infant health status, and early developmental history to the intellectual development and maturity of noninstitutionalized children 6-11 years of age in the…

Compared the performance of 56 children on the 11 subscales of the Luria-Nebraska Neuropsychological Battery-Children's Revision. Results revealed significant differences on Receptive Speech and Expressive Language subscales, suggesting a possible differential sensitivity of the children's Luria-Nebraska to verbal and nonverbal cognitive deficits.…

The vocabulary and block design short forms of the Wechsler Intelligence Scale for Children-Third Edition were administered to 63 children with attention deficit hyperactivity disorder (ADHD), 69 children with reading difficulties (RD), and 68 children with comorbid ADHD and RD. No significant differences were found. (Contains references.)…

Research supported by grant MH-12627 from the National Institute of Mental Health, and based on a PhD dissertation submitted to George Peabody College.

Reports a study using meta-analytical procedures to compare WISC-R subtest performance patterns of 29 samples of retarded, average, and above average intelligence children. Shows how the study results in distinct WISC-R profiles for each group and demonstrates how the subtest performance patterns are strongly related to overall intellectual level.…