The Peabody Picture Vocabulary Test (PPVT) is a widely used test of receptive vocabulary, but no researchers to date have examined the performance of low-educated, low-literate L2 adults, or compared these individuals' performances to their more highly educated peers. In this study, we used many-facet Rasch analysis and mixed-effects linear…

Studied the complementary nature of Illinois Test of Psycholingusitic Abilities (ITPA) and Wechsler Intelligence Scale for Children Revised (WISC-R) in a sample of 60 language-impaired children. Results suggest that the ITPA is more sensitive to differences in children's verbal and performance abilities than the WISC-R. (SLD)

Reliability of subtest composites corresponding to 46 abilities and influences presented by Kaufman (1979) was examined for the Wechsler Intelligence Scale for Children using standardization sample data (ages 6, 11, and 16). Increasing composite reliability was associated with the number of subtests and inclusion of Verbal Scale subtests in the…

The factor structures of the 10 Wechsler Intelligence Scale for Children-III core subtests were studied with 161 black students receiving special education services. Results provide evidence of a large first principal factor as well as the expected verbal and performance factors. Implications for psychologists are discussed. (SLD)

The verbal overshadowing paradigm was used with 167 undergraduates to determine whether performance across all items on Raven's Advanced Progressive Matrices was dependent on the same cognitive processes. Results clearly indicated that a subset of items was dependent on visuospatial processes, while another subset required verbal-analytic…

A 3-factor solution of the Wechsler Adult Intelligence Scale--Revised (WAIS-R) in 260 adults with suspected head injury suggested relatively good construct validity for the factors, based on correlations with neuropsychological tests. Findings are discussed in terms of the multidimensional nature of neuropsychological tests and WAIS-R factors.…

Intelligence quotient profiles in 81 high-functioning children and adults with autism were examined. Profiles did not reveal the presumed typical pattern of a lower verbal IQ than performance IQ. Results found that individuals with autism demonstrated a wide range of ability levels and patterns on the Wechsler Intelligence Scales, without a single…

The Wechsler Intelligence Scale for Children (WISC) has a long history, dating back to the 1930s, when it was devised specifically for measuring the intelligence of children through verbal and performance subtests. Intelligence quotients (IQs) are developed for verbal and performance skills. The subtests, their factors, indices derived from them,…

The Detroit Tests of Learning Aptitude, 3rd Edition (DLTA-3) is a battery of 11 subtests that measure different but interrelated mental abilities. These are clinically assessed by the battery, which further attempts to delineate the factors that contribute to Spearman's factor for general intelligence. The DLTA-3 has age norms expressed for test…