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DeVries, Rheta – 1971
A study was conducted to clarify a number of issues related to Piaget's theory of invariant sequantiality in child cognitive development. Ss were 143 middle-class white children of bright, average and retarded psychometric abilities (measured by performance on the Stanford-Binet Intelligence Test). Bright and average Ss were chronologically aged…
Descriptors: Cognitive Development, Cognitive Processes, Cognitive Tests, Compensation (Concept)
Grob, Cecelia E.; Trojcak, Doris A. – 1974
The effects of conservation activities on children's acquisition of Piaget's conservation concepts were investigated. One hundred and twenty-eight seven-to nine-year-old children in four classrooms were given pre- and post-evaluation measures of conservation ability. The experimental group completed a set of 42 self-directed conservation…
Descriptors: Academic Achievement, Age Differences, Cognitive Processes, Conservation (Concept)