Kevin S Mcgrew

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In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a r t i c l e i n f o a b s t r a c t During the past decade the Cattell–Horn Gf–Gc(More)
This study examined the effect of improvements in timing/rhythmicity on students’ reading achievement. 86 participants completed preand post-test measures of reading achievement (i.e., Woodcock-Johnson III, Comprehensive Test of Phonological Processing, Test of Word Reading Efficiency, and Test of Silent Word Reading Fluency). Students in the experimental(More)
In the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III; D. Wechsler, 1997), the manual reports several confirmatory factor analyses in support of the instrument's latent factor structure. In practice, examiners frequently compare an examinee's score from a current administration of the WAIS-III with the results from a previous test administration.(More)
Since the development of the Weschler scales, significant advances have been made in intelligence theory and testing technology that have the potential to provide a more comprehensive understanding of cognitive abilities than currently exists. For this study, the standardization sample of the Woodcock–Johnson Psychoeducational Battery-Revised (WJ-R)—an(More)
Article history: Received 13 January 2011 Received in revised form 14 January 2012 Accepted 14 January 2012 Available online xxxx We examined the degree to which the conventional notion of g associated with IQ tests and general cognitive ability tests (COG-g) relate to the general ability that underlies tests of reading, math, and writing achievement(More)
This study identifies components of personal competence and community adjustment in a national sample of persons with mental retardation living in residential facilities of six or fewer residents. Factor analysis of 65 variables yielded an 8 principal component solution that accounted for approximately half the total variance in the observed variables(More)
The structure of adaptive behavior as a function of age and status of handicap was investigated in two samples with mental retardation and five samples without retardation. Exploratory factor analysis of the subscale scores from a comprehensive, nationally standardized measure of adaptive behavior (Scales of Independent Behavior) revealed a large Adaptive(More)
This study investigated the direct and indirect effects of general intelligence and 7 broad cognitive abilities on mathematics achievement. Structural equation modeling was used to investigate the simultaneous effects of both general and broad cognitive abilities on students’ mathematics achievement. A hierarchical model of intelligence derived from the(More)
This study employed structural equation modeling to examine the effects of Cattell–Horn–Carroll (CHC) abilities on reading decoding skills using five age-differentiated subsamples from the standardization sample of the Woodcock–Johnson III (Woodcock, McGrew, & Mather, 2001). Using the Spearman Model including only g, strong direct effects of g on reading(More)