Thirty 6th- and 30 8th-grade students were administered the Kaufman Adolescent and Adult Intelligence Test (KAIT) and the Wechsler Intelligence Scale for Children-Third Edition (WISGIII) in counterbalanced order. The tests yielded similar mean IQs. Correlations between the KAIT Composite and WISC-III Full Scale IQ and between the KAIT Crystallized and WISCIII Verbal IQ were strong; correlations between the KAIT Fluid and WISC-III Performance IQ were moderately strong. Sixth-grade WISC-III IQs were more variable than KAIT IQs, and the WISC-III yielded lower minimum IQs for the 6th-grade, but not the 8th-grade, sample. The WISCIII may be preferable to the KAIT for 6th graders because it has an ample number of easy items at that age level. The KAIT and WISCIII correlated about equally well with California Achievement Test scores.
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