Children's first mathematics concept is their understanding of the quantities represented by number words (cardinal value), and the age at which they achieve this insight predicts their readiness for mathematics learning in school. We provide the first exploration of the factors that influence the age of becoming a cardinal principle knower (CPK),…

This study of 4- to 6-year-olds had 2 aims: first, to determine how lower level comprehension skills (receptive vocabulary and grammar) and verbal memory support early higher level comprehension skills (inference and literal story comprehension), and second, to establish the predictive power of these skills on subsequent reading comprehension.…

An unselected sample of rural English children completed the WPPSI at age 4 1/2 and the WISC-R four years later. Correlations were examined, as were relationships of subjects' subtest scores to Wechsler's norms. Characteristics of children not cooperating in the follow-up were considered. (SJL)