Two indices of scatter (range and mean deviation) were measured from the protocols of 86 WISC-Rs and 670 WISCs in the files of a psychological clinic. Scatter scores were significantly different from those in Kaufman's analysis of the WISC-R normative data, but substantial overlap existed in the distributions. The different scatter indices were significantly intercorrelated. GPA for a subsample (n = 42) of the WISC group was unrelated to scatter.
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