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Direct linkHale, 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
Calhoun, Susan L.; Mayes, Susan Dickerson – Psychology in the Schools, 2005
The Processing Speed Index (PSI) was first introduced on the Wechsler Intelligence Scale, Third Edition (WISC-III; D. Wechsler, 1991), and little is known about its clinical significance. In a referred sample (N = 980), children with neurological disorders (ADHD, autism, bipolar disorder, and LD) had mean PSI and Freedom from Distractibility Index…
Descriptors: Intelligence Tests, Intelligence Quotient, Cognitive Processes, Comprehension
