The Vygotsky Blocks Test assesses problem-solving styles within a theoretical framework for the development of higher mental processes devised by Vygotsky. Because both the theory and the associated test situate cognitive development within the child's social and linguistic context, they address conceptual issues around the developmental relation…

Analysis of the conceptions of spatial relations, size comparisons, and gesture imitations of 16 autistic children (ages 6-14 years) with IQs over 70 indicated an inability to acquire concepts of size comparison and spatial relationships through verbal instructions, suggesting a cognitive deficit of impaired symbolic-representational functioning.…

This study, which is a partial replication and validation of the 1962 Laurendeau and Pinard study of causal thinking, investigates cross-cultural differences among three age levels of Canadian and American school children in the development of causal thinking. Also studied is the relationship between level of development of causal thinking and…

This study was designed to investigate the role of information storage and processing in the cognitive process of synthesis. In particular the effect of the timing of the presentation of two subordinate informational concepts on the cognitive process of synthesis was examined. 88 high school students in four sections of an introductory chemistry…

This study attempted to determine whether a combination of seriation and classification training would produce more general intellectual gains. (Author/SB)

The neuropsychologic performance of 27 children (about 6 to 13 years old) with early-treated phenylketonuria (PKU) was evaluated and correlated with their serum phenylalanine concentrations at several ages. (Author/SEW) Journal Availability: The Journal of Pediatrics; The C. V. Mosby Company, 11830 Westline Industrial Drive, St. Louis, MO 63141.

This study determined which intellectual abilities account for IQ changes over the school year. All the Head Start subjects involved in the study (35 boys and 33 girls, mean age 44.1 months) lived in poverty under conditions of urban deterioration. The subjects were initially given the Standord-Binet Intelligence Scale in the fall and were tested…

A set of immediate memory-span tests, concept- and rule-learning tasks, and an IQ test were administered to adolescents. A color-form memory factor and IQ substantially predicted rule-learning proficiency. Effects of memory aids appeared to induce conceptual rules and serve as a base for rehearsing information. (Author/RD)