To assess the effects of timed/untimed testing conditions on intelligence scores, high school students were assigned to an intelligence test under either conditions and subsequently to a battery of eight reaction time tests. Results showed that subjects scores were related to the speed with which they processed information. (JAZ)

This study investigates the nature and the factor structure of infant intelligence. The Bayley Mental Scale items were administered. According to the analysis, intelligence at any age is a set of separate mental abilities at each age, and there are a variety of paths through which mental development occurs. (JAZ)

Examined decreasing achievement motivation and decreasing self control due to declining academic rigor in the public schools as an explanation for increased intelligence and decreased academic achievement. Results indicated older subjects were higher in achievement motivation and self control, yet had lower reported grades than a younger sample.…

Since early research had shown that a total score on 27 Piagetian tasks was very highly correlated with a Wechsler and achievement composite, a study investigated the possibility of shortening the Piagetian test by means of classical analysis methodology. (HOD)

The construct validity of the Sequential Processing, Simultaneous Processing and Achievement scales of the Kaufman Assessment Battery for Children was supported by factor-analytic investigations of a representative national stratified sample of 2,000 children. Correlations provided insight into the relationship of sequential/simultaneous…

Twenty-four measures of crystallized intelligence and fluid intelligence were obtained for samples of graduates and failures of an innovative instructional setting where computer-managed mastery learning was implemented to teach elementary electricity and electronics. Results suggest that some unconventional educational environments are not…

Seeing intelligence as neither strongly hereditary nor necessarily stable over time, and accepting the notion that it is a significant determinant of future occupational status, liberal psychologists and educators rely on the intervention of social institutions, primarily the school. The liberal view toward testing and intelligence is discussed.…

The preceding article by Robert Sternberg implicitly accepts the idea that there is a single human potential called "intelligence" that is scientifically measurable. Human beings do not possess any such generalized intelligence, however. Instead, each person possesses a mix of several basic intellectual competencies or…

Thorndike's Stanford-Binet data suggest that from 1932 to 1971-72 preschool children enjoyed greater IQ gains than older children, possibly due to the rise of television. Additional analysis indicated that gains were either due to sampling error or totally antedated 1947. Gains of 12 IQ points were found for Americans. (Author/EGS)

The relationship between psychometric intelligence and rapid acoustic information processing was explored in two experiments using college students. Group differences occurred in threshold interstimulus intervals required for recognition and in speed. Results were interpreted as indicating better information processing efficiency (higher…

The hierarchical and radex models of ability organization are shown to be parallel. Both suggest a complexity continuum for cognitive performance tasks which, in the radex model, corresponds to the general-to-specific dimension in factor analyses. The bases for this continuum indicate its importance for theories of intelligence. (Author/RD)

Where estimation of abilities in the lower half of the ability distribution for the Raven Progressive Matrices is important, or an increase in accuracy of ability estimation is needed, the multiple category latent trait estimation provides a rational procedure for realizing gains in accuracy from the use of information in wrong responses.…

The major findings of this study support the view that the social environment plays a dominant role in determining the average IQ level of black children and that both social and genetic variables contribute to individual variation among them. (Author/AM)

Timed and untimed scoring methods were employed with five WAIS subtests administered to 40 young and 40 old subjects matched for verbal intelligence. Elimination of bonuses for rapid performance differentially improved the scores of older subjects but did not raise those scores to levels achieved by the young. (Author)

The State of Washington special education regulations address the eligibility determination for specific learning disabilities and require the development of regression tables for calculating a severe discrepancy between intellectual ability and academic achievement. The Office of Superintendent of Public Instruction (OSPI) Special Education,…