The Stanford-Binet IV and the WISC—R were administered to 30 children, ages 8 to 15 yr., whose scores were in the range of mild mental retardation. The mean interval between testings was 7 mo. The correlation was .83, with a median difference of 4 points. The WISC—R mean IQ was significantly lower than the Stanford-Binet-IV Composite mean score for the group. The disparity in scores points to the need to evaluate measures of intelligence together with other indices of functioning in decision-making for mildly retarded children.
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