A Comparison of Referred Students' Performance on the WISC-III and the Stanford-Binet Intelligence Scale: Fourth Edition

Abstract

The WISC-III and the S-B:IV were administered in counterbalanced order to 73 low socioeconomic status inner city referred students. The WISC-III Full Scale IQ averaged 9.4 points lower than the S-B:IV Test Composite, and the WISC-III Verbal IQ averaged 13.1 points lower than the Stanford-Binet Verbal Reasoning Area score. The nonverbal scales (Performance IQ and Abstract/Visual Reasoning Areas) differed by an average of 8.1 points. The .81 correlation between the two tests indicated, however, that performance on one test cannot be predicted reliably by the performance on the other. The results suggest that the two tests do not always give similar diagnostic impressions. Additional research is needed to determine the generalizability of the findings.

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