This study investigates the relationships of domain-general cognitive abilities and domain-specific verbal and mathematical abilities to students' educational characteristics when two theoretically grounded, but competing structural models are applied. In the standard model, a single latent ability causes interindividual differences in the…

Derived changes in genes associated with primary microcephaly (MCPH) have been suggested to be "currently sweeping to fixation" i.e., increasing in frequency in most populations, with the likely outcome that the derived allele will completely displace the ancestral allele over time. Possible causes for this sweep include effects on human reasoning…

This study is aimed at trying to discover the isolable characteristics of intelligence, of the kind of mental processes which result from it, and of the relationship between intelligence and the formation of concepts. (Author)

The OST is a technique quite different from anything reported elsewhere in the literature. The model underlying OST work assumes that an individual's intellect, at any given point in time, is the set of all information he has at his disposal at that point in time. The set of concepts an individual has at any point in time may radically change over…

A hierarchical factor solution was obtained from a psychometrized battery of Piagetian-type tasks individually administered to 660 kindergarten children. The first two levels of factors included Piagetian theoretical entities. A third level factor was identified as a g. The association of Piagetian tasks with academic achievement was through the g…

The authors caution that in neglecting to focus on cognitive training, special education may be denying the very ideology on which it is built. (Author)

Many science curriculum development projects have the goal of increasing students' ability to employ scientific or formal reasoning strategies. Argues that longitudinal data of students who acquired formal reasoning strategies as a consequence of specific instruction are needed to provide evidence that these skills will help in other academic…

DO CHILDREN RAISED IN ENVIRONMENTS ASSOCIATED WITH LATER DEFICITS IN PSYCHOMETRIC INTELLIGENCE SHOW ANY DEFICITS DURING INFANCY AND, IF SO, WHEN DO SUCH DEFICITS APPEAR AND WHAT ABILITIES ARE AFFECTED. ARE THE ENVIRONMENTAL FACTORS ASSOCIATED WITH EARLY DEVELOPMENT OF INTELLIGENCE. FIFTY-ONE SLUM INFANTS AND A CONTROL GROUP OF 51 NON-SLUM INFANTS…

This study attempted to determine whether attendance at a traditional preschool resulted in significant cognitive gains for young children over a 3-year period. The experimental group consisted of 59 children at four preschools. Each was matched with a nonattender on such variables as age, sex, intelligence, and family characteristics. The mean…

This study explored the relationship of two distinctive types of divergent cognitive styles, "cold" creativity and "hot" creativity, to academic overachievement. The "cold" divergent cognitive style was found to be a controlled, problem-solving approach to stimuli, whereas the "hot" divergent cognitive style was a freer, more impulsive response to…

Raven's Progressive Matrices test items were analyzed for M demand (Pascual-Leone's developmental construct). Data on second- and third-grade subjects were analyzed for extent of absolute agreement of Raven and Figural Intersection Test (FIT) scores. Raw scores on the Raven could be deduced on the basis of FIT performance. (Author/RD)

THE DEVELOPMENT OF THOUGHT PROCESSES UNDER OPTIMUM TRAINING CONDITIONS WAS STUDIED. OPTIMUM WAS DEFINED TO INCLUDE (1) A CURRICULUM FOR THE DEVELOPMENT OF THOUGHT, (2) TEACHING STRATEGIES FOCUSED DIRECTLY ON MASTERY OF NECESSARY COGNITIVE SKILLS, AND (3) A SUFFICIENT TIME SPAN TO PERMIT A DEVELOPMENTAL TRAINING SEQUENCE. CHILDREN FROM 20…

Whether "psychometric" and "Piagetian" kinds of intelligence are similar is a question of whether they have similar courses of development with age. When using factor analysis to address this issue, age effects must be eliminated in order to assess relations among measured constructs. Reanalyses of previous results were…

The application of Piaget's theory of cognitive development to the assessment of mental ability of the mentally retarded is presented. Following a discussion of developmental theories and diagnosis of mental development, testing interviews demonstrate the limits of cognitive thought at each of three stages. Abnormal intellectual oscillations are…