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Docherty, Edward M. – 1974
This paper presents a study designed to determine if groups of concrete and formal operational children can be identified through the technique of cluster analysis, using a battery of Piagetian tasks. A Total of 64 subjects, 8 boys and 8 girls from each of the second, fourth, sixth, and eighth grade levels, were selected from a public elementary…
Descriptors: Abstract Reasoning, Cluster Analysis, Cognitive Development, Developmental Psychology