Age differences in WISC-III subtests of children experiencing academic difficulties.
WISC-III subtest scores of 180 children referred because of academic difficulties were analyzed for differences based on age (M = 9.6, SD = 2.7) and IQ. Rank-orders of all subtests indicated no significant correlations across the six age-IQ groups, suggesting that interpretation of changes in subtest rankings may require consideration of age and IQ, especially for such children. When data were organized into Acquired Knowledge, Spatial Ability, and speed-related task categories, analyses of variance showed a main effect for IQ. Furthermore, scores on Acquired Knowledge were associated with age at the lower category of IQ, whereas Spatial Ability and speed-related tasks were not related to age.
Brazelton
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Haley Center, Auburn University, AL 36849, USA.
Byrd
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McCraw
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Byrd
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EK
D000367:Age Factors; D000407:Alabama; D002648:Child; D005260:Female; D006801:Humans; D007360:Intelligence; D007859:Learning Disabilities / Q000175:diagnosis* / Q000523:psychology; D008297:Male; D011594:Psychometrics; D012424:Rural Population; D014888:Wechsler Scales / Q000706:statistics & numerical data*