These 2 studies investigated the factor structure of the Wechsler Intelligence Scale for Children-4th edition (WISC-IV; Wechsler, 2003a) with exploratory factor analysis (EFA; Study 1) and confirmatory factor analysis (CFA; Study 2) among 2 independent samples of gifted students. The EFA sample consisted of 225 children who were referred for a…

The linear loadings of intelligence test composite scores on a general factor ("g") have been investigated recently in factor analytic studies. Spearman's law of diminishing returns (SLODR), however, implies that the "g" loadings of test scores likely decrease in magnitude as g increases, or they are nonlinear. The purpose of this study was to (a)…

This study investigated the predictive power of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) Full Scale IQ (FSIQ), the General Ability Index (GAI), and the WISC-IV index score composites on subsequent reading and math standardized test scores among high-achieving students. The sample consisted of 84 elementary-age students…

Orthogonal higher-order factor structure of the Cognitive Assessment System (CAS; Naglieri & Das, 1997a) for the 5-7 and 8-17 age groups in the CAS standardization sample is reported. Following the same procedure as recent studies of other prominent intelligence tests (Dombrowski, Watkins, & Brogan, 2009; Canivez, 2008; Canivez & Watkins, 2010a,…

The goal of the current study was to explore the relations between shyness, academic engagement, and academic achievement in childhood. Participants were (n = 125) children (aged 9-13 years) attending public school boards in Canada. Children completed self reports of shyness and were administered a test of nonverbal IQ. Academic achievement was…

The Wechsler Abbreviated Scale of Intelligence (WASI; Psychological Corporation, 1999) and the Wide Range Intelligence Test (WRIT; Glutting, Adams, & Sheslow, 2000) are two well-normed brief measures of general intelligence with subtests purportedly assessing verbal-crystallized abilities and nonverbal-fluid-visual abilities. With a sample of 152…

Orthogonal higher-order factor structure of the Stanford-Binet Intelligence Scales-Fifth Edition (SB-5; Roid, 2003a) for child and adolescent samples is reported. Multiple criteria for factor extraction unanimously supported extraction of only one dimension and a unidimensional model. However, following results from DiStefano and Dombrowski (2006)…

IQ and achievement scores were analyzed for 678 children with attention-deficit/hyperactivity disorder (ADHD; 6-16 years of age, IQ=80) administered the Wechsler Intelligence Scale for Children-Third Edition (WISC-III; n=586) and Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV, n=92). Approximately 76% of children in both samples…

The relationships between Wechsler Intelligence Scale for Children-Third Edition (WISC-III) and the Cognitive Assessment System (CAS) with the Woodcock-Johnson Tests of Achievement (WJ-III) were examined for a sample of 119 children (87 males and 32 females) ages 6 to 16. The sample was comprised of children who were referred to a specialty clinic…

Surveys 354 nationally certified school psychologists on the perceived usefulness of the Wechsler Intelligence Scale for Children-III (WISC-III) in general and profile analysis in particular. Practitioners rated the WISC-III as very useful for determining diagnosis and educational placement, but less useful for developing instructional strategies…

Provides a general review and discussion of studies relating to hemispheric asymmetry in normal and reading disabled populations and possible implications with regard to the meaningfulness of IQ test results. Emphasizes research suggesting that the verbal factors of the WISC-III are related to the length of the left temporal bank of the planum…

Reviews the articles in this issue of "School Psychology Quarterly" and briefly compares their methods for identifying profile patterns. Argues that subtest profile patterns on the existing generation of intelligence tests have modest reliability and weak relationships with achievement and diagnostic categorizations. (Contains 13 references.)…

Reviews the results of four studies included in this issue of "School Psychology Quarterly" which found all four cognitive profile reports lacking reliability, validity, or diagnostic utility. Argues that ipsative methods are inferior to normative methods in cognitive assessment. Recommends that psychologists eschew the application of cognitive…

Examines the incremental validity of Differential Ability Scales (DAS) factor scores in predicting standardized achievement scores in Word Reading, Basic Number Skills, and Spelling by using a nationally representative sample stratified on gender, ethnicity, geographic region, parental education, and educational classification. Results show that…

Evaluates, with respect to the quality of evidence offered in support of knowledge claims, the relationship between culture and test session behavior (TSB) on group and individual tests of intelligence and/or achievement. Identifies four relevant categories in the literature. Reviews key literature from the speculative theories and studies of…