Cognitive subtest scatter has often been considered to be diagnostically significant. The current study tested the diagnostic validity of four separate operationalizations of WISC-III subtest scatter: (a) range of verbal, performance, and full-scale subtests; (b) variance of verbal, performance, and full-scale subtests; (c) number of subtests…

We examined implicit and explicit memory in adults with Williams syndrome. An age-related dissociation was found; repetition priming (reflecting implicit memory) did not show change with age, but free recall (reflecting explicit memory) was markedly reduced. We also compared the performance of adults with Williams syndrome to adults with Down…

In this article, the author discusses Robert J. Sternberg's theory of "successful intelligence," which theorizes that intelligence consists of three parts: analytic, creative and practical abilities. Sternberg argues that intelligence can be fostered in the right educational environment by encouraging students to develop and exercise their…

The use of the Wechsler Intelligence Scale for Children, Third Edition (WISC-III) and its interpretation in educational use are discussed. To measure intelligence, Wechsler believed one must measure the various aptitudes that contribute to the total behavior of the individual. The WISC-III has six verbal subtests and seven performance subtests.…

In school settings, students are typically evaluated using group achievement tests, IQ scales, and college entrance exams that focus more on rote-verbal skills (e.g., vocabulary, mathematical facts) than on higher level executive functions (e.g., abstract thinking, problem solving). However, recent neuropsychological findings suggest that…

The Stanford-Binet Intelligence Scale-Revised and the Kaufman Assessment Battery for Children (K-ABC) were compared using a sample of 26 developmentally disabled children, aged 32 to 73 months. The focus of the study was to determine the feasibility of the K-ABC both for assessment and for planning more effective remediation programs for this…

This paper briefly reviews research on tasks in knowledge-rich domains including developmental studies, work in artificial intelligence, studies of expert/novice problem solving, and information processing analysis of aptitude test tasks that have provided increased understanding of the nature of expertise. Particularly evident is the finding that…

This study examines the nature of the highly variable black-white difference across diverse tests and indicates the major systematic source of this between-population variation, namely, Spearman's g. Eleven large-scale studies (discussed in the appendix), each one comprising anywhere from 6 to 13 diverse tests, show a significant and substantial…

This paper draws from several disciplines to provide a foundation for making progress toward a unified conception of thinking in science education. Areas covered include: (1) the philosophy of science (discussing contextual realism); (2) cognitive psychology (describing development of scientific thinking skills); and (3) artificial intelligence…

The effect of reading practice upon reading ability was investigated in three separate studies, with six high school students in each study. Each student was given 50 to 70 hours of individualized instruction on a PLATO IV computer terminal. Half of the students in each study were selected on the basis of high scores on the Raven Progressive…

The results of this study support earlier contentions that standardized intellectual ability and school achievement tests are quite heterogeneous with respect to cognitive style requirements. The findings indicate, however, that additional variance was accounted for by cognitive style measures beyond that of verbal and nonverbal IQ relation to…

Presented is an introduction to the operation and mechanics of the ACTP production system, a version of Anderson's (1976) ACT system. ACTP is already in use modeling geometry theorem proving and counting of a set of objects, and has been identified as a potentially useful programing framework for developing models of the cognitive processes used…