“Be and see” the #WISC-V correlation matrix: Unpublished analyses of the WISC-V #intelligence test

 I often “play around” with data sets until I satisfy my curiosity…and never submit the results for publication.  These WISC-V analyses were completed 3+ years ago.  I stumbled upon the folder today and decided to simply post the information for assessment professionals interested in the WISC-V.  These results have not been peer-reviewed.  One must know the WISC-V subtest names to decipher the test abbreviations in some of the figures.  

This is a Gv (visual; 8 slides) summary a set of exploratory structural analyses I completed with the WISC-V summary correlation matrix (Table 5.1 in WISC-V manual). View and enjoy. 

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The CHC model of human cognitive abilities--a proposed revision (v2.3): Has Glr been incorrectly conceptualized since 1997?

This presentation contains a historical overview of the derivation of the Glr ability domain in contemporary CHC theory. It then presents new data, as well as historical conclusions of the CHC masters, that makes a strong case for replacing the stratum II broad ability domain of Glr with two separate broad ability domains of Gl (learning efficiency) and Gr (retrieval fluency). How to obtain WJ IV scores for these two broad abilities is presented, as well as other possible Gl and Gr tests indicators from the CHC cross-battery literature.

A pdf copy of this set of slides, one per page, can be downloaded here.

CHC model of inteligence revised (v2.4). Has Glr been incorrectly conceptualized since 1997? from Kevin McGrew

Gf and Gc differential effects on short-term educational learning

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Thursday, April 23, 2015

9:41 PM

The WJ IV ASB # 3: The WJ IV Gf-Gc Composite and SLD identifcation

I am pleased to announce that the WJ IV Assessment Service Bulletin # 3 (The WJ IV Gf-Gc Composite and its use in the identification of specific learning disabilities) is now available here. It will be posted at the publishers WJ IV web site within a week. Below is the abstract

The authors of the Woodcock-Johnson IV (WJ IV; Schrank, McGrew, & Mather , 2014a) discuss the WJ IV Tests of Cognitive Abilities (WJ IV COG; Schrank, McGrew, & Mather , 2014b) Gf-Gc Composite, contrast its composition with that of the WJ IV COG General Intellectual Ability (GIA) score, and synthesize important information that supports its use as a reliable and valid measure of intellectual development or intellectual level. The authors also suggest that the associated WJ IV COG Gf-Gc Composite/Other Ability comparison procedure can yield information that is relevant to the identification of a specific learning disability (SLD) in any model that is allowed under the 2004 reauthorization of the federal Individuals with Disabilities Education Improvement Act (IDEA).




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