This study analyzes the interplay of four cognitive abilities--reasoning, divergent thinking, mental speed, and short-term memory--and their impact on academic achievement in school in a sample of adolescents in grades seven to 10 (N = 1135). Based on information processing approaches to intelligence, we tested a mediation hypothesis, which states…

The purpose of this research was to study the correlation between socioeconomic status and intelligence. The Project Talent Data Bank was used in the study. The measures of privilege/deprivation developed show some degree of differential abilities and the measures of intellectual privilege are almost cogeneric measures of general intelligence.…

Questions raised by contemporary research on mathematical giftedness were addressed in a longitudinal study based on a random stratified sample of 95,650 tenth graders and a subsample of 497 mathematically gifted boys and 508 mathematically gifted girls from this larger pool. Gender differences and educational outcomes are discussed. (SLD)

Physical and medical correlates of mathematical giftedness were studied in gifted (497 males and 508 females) and environmentally privileged (high socioeconomic status) (647 males and 485 females) tenth graders. Medical and physical well-being appears more highly associated with mathematical giftedness than with socioeconomic privileges. (SLD)