A correlational study of the Detroit Tests of Learning Aptitude and the McCarthy Scales of Children's Abilities was conducted. In this sample of 111 children with a mean age of 5 yr. 8 mo., specific subtests or scales of each instrument were compared and analyzed. General ability or skill measures of both instruments represented the highest levels of correlation and shared, or common, variance. The only specific learning abilities assessed by both instruments and demonstrating common variance were determined in the motor and/or perceptual areas. Few relationships were determined for verbal or quantitative abilities as assessed by either instrument.
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