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Direct linkElliott, Colin D.; Hale, James B.; Fiorello, Catherine A.; Dorvil, Cledicianne; Moldovan, Jaime – Psychology in the Schools, 2010
This study investigated the effects of broad cognitive abilities derived from the Cattell-Horn-Carroll (CHC) taxonomy, together with the effect of the general factor ("g"), on Wechsler Individual Achievement Test, Second Edition (WIAT-II) reading achievement. Structural equation modeling (SEM) and commonality analyses were applied to the…
Descriptors: Cognitive Ability, Reading Achievement, Structural Equation Models, Cognitive Tests
Hale, James B.; Fiorello, Catherine A.; Dumont, Ron; Willis, John O.; Rackley, Christopher; Elliott, Colin – Psychology in the Schools, 2008
Concerns about the ability-achievement discrepancy method for specific learning disability (SLD) determination led to alternative research-based methods, such as failure to respond to intervention. Neither of these "regulatory" methods address the "statutory" SLD definition, which explicitly includes a deficit in "basic…
Descriptors: Learning Disabilities, Predictive Validity, Psychology, Mathematics Achievement
