For the WISC-R
, the commonly adopted model with three group factors, the verbal factor, the performance factor, and the freedom from distractability factor, was found to fit the data satisfactorily and was selected for the subsequent analysis.
Even though readministration of the WISC-R
might be unnecessary in a reevaluation, some form of assessment has been deemed essential (USDHEW, 1977).
Several studies based on MZ and DZ twins have shown that the broad heritability of various cognitive abilities measured by diverse psychometric tests (such as the subscales of the WISC-R
) is directly related to those tests' loadings on the g factor extracted from a factor analysis of the various tests (studies reviewed in Jensen, 1987a, pp.
Some researchers claim that there is no systematic and clear correlation between the patterns of SLDB and WISC-R
and that the abovementioned patterns of WISC-R
can be found in many gifted children as well; therefore these patterns should not be used to diagnose SLD (26).
Specifically, based on data from the 362 children in the American WISC-R
standardization sample who scored 120 or above on the verbal, manipulative or full scale IQ indexes, Willson, Gilberg and Reynolds (1982) found that a univariate model called Verbal Ability, was the best fit.
Com relacao aos estudos entre o SON-R 2 1/2-7 e o WISC-R
, um estudo na Holanda com criancas especiais verificou correlacao de 0,62 entre o QI total dos dois testes.
Validity of two short forms of the WISC-R
in children with traumatic brain injury.
Attention deficit hyperactivity disorder (ADHD) usually presents a profile in which the freedom from distraction factor of the WISC-R
(FDF) is affected to a greater extent than the verbal comprehension factor (VCF) and the perceptual organisation factor (POF).
It was found that the WISC-R
Verbal/Performance IQ discrepancy showed up reliably more often among delinquents than among controls.
Fineman & Carran (1986) researched a short form consisting of the Vocabulary, Block Design, and Similarities WISC-R
subtests (Wechsler, 1972).