Goals: This study examined: (a) crystallized/fluid intelligence trajectories of adolescents and adults with Down syndrome; and (b) the contribution of endogenous (health, activities of daily living--ADL) and exogenous (cognitively stimulating leisure activities) factors on adults' intelligence with age. Method: Four cohorts (N = 80) with Down…

Despite the lasting interest towards the relationship between intelligence and creativity, comparably less attention is paid to its age-related changes. Our paper considers the organization of fluid intelligence and psychometric indicators of creativity and is based on the experimental data obtained for children aged 11 (n = 99) and for young…

Despite numerous studies, the link between verbal working memory (WM) and calculation abilities remains poorly understood. The present longitudinal study focuses specifically on the role of serial order retention capacities, based on recent findings suggesting a link between ordinal processing in verbal WM and numerical processing tasks. Children…

Recent studies suggest that working memory training may benefit older adults; however, findings regarding training and transfer effects are mixed. The current study aimed to investigate the effects of a process-based training intervention in a diverse sample of older adults and explored possible moderators of training and transfer effects. For…

This study investigated the possibility that the widely reported relationship between IQ and inspection time (IT) in children may derived from the involvement of aspects of attention. Results with 49 children aged 8 to 11 years show that IT is a significant predictor of Colored Progressive Matrices scores after age and attention measures are…

This study tested Piaget's claims that the transition from objective to subjective responsibility occurs by age 12 and that peer interaction facilitates the transition. Results indicated that the development of moral judgment continues into late adolescence. (Author/DB)

Various testing-the-limits procedures were employed in administering the Raven Coloured Progressive Matrices Test to second- and fourth-grade children. Tests of impulsivity, neuroticism, extroversion, intelligence, and achievement were given. Procedures which involved verbalization and feedback were efficacious in maximizing performance on the…

The degree to which reading ability and intelligence, as measured by the Raven Progressive Matrices Test, were related was studied for 486 students in grades 2 through 12 in a small town, rural school system. Results indicate the strong and consistent relationship between general intelligence and reading ability. (SLD)

As a prelude to testing deductions from the Ferguson and other ability theories that environment influences patterns of ability, school children in 5 large and 11 small isolated communities on the South Coast of Newfoundland were tested to compare ability patterns of children in small places with those in large communities. Data used for…