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McGill, Ryan J.; Busse, R. T. – School Psychology Quarterly, 2015
This study is an examination of the incremental validity of Cattell-Horn-Carroll (CHC) broad clusters from the Woodcock-Johnson III Tests of Cognitive Abilities (WJ III COG) for predicting scores on the Woodcock-Johnson III Tests of Achievement (WJ III ACH). The participants were children and adolescents, ages 6-18 (n = 4,722), drawn from the WJ…
Descriptors: Cognitive Ability, Cognitive Tests, Test Validity, Predictor Variables