The Cattell-Horn-Carroll (CHC) model is a comprehensive model of the major dimensions of individual differences that underlie performance on cognitive tests. Studies evaluating the generality of the CHC model across test batteries, age, gender, and culture were reviewed and found to be overwhelmingly supportive. However, less research is available…

The role of short-term memory and working memory in accomplished multilinguals was investigated. Twenty-eight accomplished multilinguals were compared to 36 mainstream philology students. The following instruments were used in the study: three memory subtests of the Wechsler Intelligence Scale (Digit Span, Digit-Symbol Coding, and Arithmetic,…

Examined the factor structure of the Multidimensional Aptitude Battery (MAB) (D. Jackson, 1984) and the overlap between the MAB and the Wechsler Adult Intelligence Scales-Revised (WAIS-R) using a sample of 85 adults. Results show conditions under which the MAB is a suitable alternative to the MAB. The MAB is not suitable when detailed information…

The gains of scores on standardized intelligence tests (i.e., Flynn effect) have been the subject of extensive debate concerning their nature, causes, and implications. The aim of the present study is to investigate whether five intelligence tests are measurement invariant with respect to cohort. Measurement invariance implies that gains over the…

Over two decades, six studies evaluated the effects of a home-based early language program on the development of 101 infants. Parents engaged in enrichment activities with their infants over a one-year period that began when the infants were between three and 13 months of age. Participants from families with varied levels of education were…

Results of profile analysis via multidimensional scaling (PAMS), a technique for studying the most prominent profiles in a battery of measures, are reported for the Wechsler Adult Intelligence Scale--Revised (WAIS) and the General Aptitude Test Battery (GATB). PAMS profiles and the methodological features of the PAMS approach are discussed. (SLD)

Normative data for the Advanced Raven's Progressive Matrices are presented based on 300 University of California, Berkeley, students. Correlations with the Wechsler Adult Intelligence Scale and the Terman Concept Mastery Test are explored. The relationship between the Advanced Raven's Progressive Matrices and Spearman's g is explored. (Author)

To investigate the role expectation based rules governing formal reasoning performance, a battery of group and individual aptitude measures and formal reasoning tests were administered to 17-year-olds. Individual differences in usage of these rules were clarified by establishing an overlap between an aptitude model and formal reasoning.…

Describes a study of the effectiveness of the Scholastic Aptitude Test (SAT), high school graduation class percentile, and the Wechsler Adult Intelligence Scale (WAIS), as predictors of short- and long-term academic achievement among a sample of 58 high-risk college freshmen who participated in 1-year special studies program. (PAA)

Sex differences in variability in the national norms of the Differential Aptitude Tests, Preliminary Scholastic Aptitude Test/Scholastic Aptitude Test, Wechsler Adult Intelligence Scales, and California Achievement Tests were examined. Compared to females, males were consistently more variable in quantitative reasoning, spatial visualization,…