Lynn [Lynn, R., 2002. Sex differences on the progressive matrices among 15-16 year olds: some data from South Africa. "Personality and Individual Differences 33," 669-673.] proposed that biologically based developmental sex differences produce different IQ trajectories across childhood and adolescence. To test this theory we analyzed the…

Arguments requiring separate deaf norms are evaluated with data describing deaf and hearing children's performances on nonverbal intelligence tests. The issue of which norms a psychologist should select for scoring Wechsler Intelligence Scale for Children (Revised) Performance Scale protocols is discussed with reference to the impact that deaf and…

Two hundred seventy-four boys and girls, aged 7 through 15 years, participated in a test-retest reliability study of the Developmental Tests of Visual-Motor Association. Test-retest correlations for the total group and subjects comprising categories A through D were significant. (Author/SJL)

Children 3.5 to 5.5 years of age who were unable to conserve length with Piaget's classical task did conserve length with parallel nonverbal tasks. Findings suggest that "preoperational" children apparently do not fail to conserve length because of centration, misleading perceptual information, or immature cognitive operations regarding…

This study examined patterns of nonverbal intelligence test performance of 11 preschool children with and 12 without specific language impairments. The study found group differences in relations among nonverbal cognitive skills. Results suggest caution in using nonverbal intelligence tests normed on nondisabled children with children having…

Applied reliable component analysis (RCA) to the normative data (2,100 children and adolescents) for the Universal Nonverbal Intelligence Test (UNIT) (A. Bracken and R. McCallum, 1998) to allow for the computation of reliable uncorrelated memory and reasoning scores. RCA sores were highly replicable, had good convergent validity, and had greater…

One hundred elementary- and middle-school students were administered the Universal Nonverbal Intelligence Test (UNIT; B.A. Bracken & R.S. McCallum, 1998) and the Leiter International Performance Scale-Revised (Leiter-R; G.H. Roid & L.J. Miller, 1997). Correlations between UNIT and Leiter-R scores were statistically significant ( p less…

Past validity research involving the Leiter International Performance Scale and the Arthur Adaptation of the Leiter International Performance Scale is reviewed, particularly as it relates to evaluating intelligence of hearing impaired children. (Author)

A study examining the relationship between nonverbal intelligence and academic achievement in 53 hearing impaired 7-18 year olds supported using the Hickey-Nebraska Test of Learning Aptitude (along with other measures) in interpreting individual differences in the academic achievement of hearing impaired students. (Author/CL)

The Draw-a-Design and Draw-a-Child, two subtests of the McCarthy Scales, are the best-normed drawing tests for children aged two and a half to eight and a half years but have no age-corrected deviation scaled scores available for interpretation. Scaled scores for use in interpretation are presented for these tests. (Author/NRB)

Examined the relationship between the Peabody Picture Vocabulary Test-Revised (PPVT-R), the Peabody Picture Vocabulary Test (PPVT) and the Wechsler Intelligence Scale for Children-Revised (WISC-R) with incarcerated delinquents (N=35). Results indicated that the PPVT-R yielded a higher correlation with the WISC-R verbal IQ scores than did the PPVT.…

Examines the order of emergence of the concepts "in,""on," and "under" in a nonverbal cognitive task and in linguistic comprehension and production tasks. Subjects were 75 Israeli children between 14 and 30 months of age. In general, cognitive tasks were solved first, language comprehension tasks second, and language…

Tests the hypothesis that the presence of attentional deficits in autistic children interferes with their performance on tests of intellectual development and status. Twelve autistic, 12 normal, and 12 trainable mentally retarded children ages four through nine were administered six "Piagetian" tasks assessing performance at…

Describes the development of an oral test for Florida drivers' license applicants whose literary impairments prevent them from passing a written examination. Field test results show that the test accurately measures applicants' knowledge of driving practices rather than their reading skills. (SK)

Investigates performance of children (N=731) on the Matrix Analogies Test-Short Form (MAT-SF) as a measure of nonverbal intelligence. Analysis revealed that performance of Greek children was similar to an American sample. Findings suggest that MAT-SF can be used as a screening measure of nonverbal intelligence with Greek children using the US…