Abstract
The McCarthy Scales of Children's Abilities (MSCA) was administered to 200 children, 100 males and 100 females, with a mean chronological age of 3–9. The results were subjected to factor analysis to determine the validity of MSCA alignment into six distinct indexes, or factors, and to determine if there were sex differences in factors produced by the MSCA. A general (“g”) factor was derived for both females and males. Specific factors (Abstract Verbal Reasoning and Remote Verbal Memory) were derived for the female sample. Two specific factors (Sequential Memory and Nonverbal Cognition) were derived for the male sample. Only the “g” factors derived for male, female, and total samples corresponded to the General Cognitive Index (GCI) used in the MSCA. The results suggested that clinical interpretation of the MSCA should be made cautiously for both normal and exceptional children until further exploration of the construct validity and sex differences in the MSCA can be conducted.
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