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Ball, Rachel S. – 1971
The present report is the fourth of a series concerned with mental functioning and its development in early childhood. The study attempted to discover whether the same children tested at intervals of one or more years showed similar development in thinking ability from age to age. Longitudinal test protocols were obtained for 92 children at 3…
Descriptors: Ability, Age Differences, Aptitude, Convergent Thinking
Stott, Leland H.; Ball, Rachel S. – 1968
A study was conducted to identify types of mental operations of 4- and 5-year-olds and to relate them to the child's age and the educational level of the mother. The sample consisted of 423 white English-speaking children of American parentage, evenly divided by sex and as evenly distributed as possible over the 12-month-age range of 4 to 5 years.…
Descriptors: Ability Grouping, Age Differences, Classification, Cognitive Ability