Multiple Indexes of Test Scatter on the Kaufman Assessment Battery for Children

Abstract

Discrepancy scores for the four global scales and the Nonverbal Scale were examined for the Kaufman Assessment Battery for Children (ages 2-1/2 to 12-1/2) using the standardization sample as the data source. In addition, the range of subtest scores and the profile variability of subtest scores were determined for each sex, race, and age level. Tables illustrating the frequency of significant scale and subtest scores are presented. Consistent with research in the 1960s and 1970s, significant intellectual discrepancies occur frequently in normal populations. Proper evaluation of within test scatter should consider base rates for discrepancies in the normal population in addition to the statistical significance of the difference.