Examined the validity of a subtest combination as an estimate of the Wechsler Intelligence Scale For Children (Revised) Full Scale IQ. Satisfactory correlations were found between the short and full scale IQ. The short form did not allow precise IQ estimation but shows promise as a screening device. (Author)

Explored the hierarchical structure of mental abilities by comparing principal component analysis with a hierarchical cluster analysis algorithm on a short test battery for 182 children. Both the linear principal component analysis and the nonlinear hierarchical clustering analysis confirmed the hierarchical organization of mental abilities. (JAC)