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Cathcart, W. George; Liedtke, Werner W. – Alberta Journal of Educational Research, 1973
The main purpose of this study was to select some 7 1/2 to 8 year old subjects and to determine if there was a difference between those classified as impulsive and those classified as reflective in their ability to conserve length. (Author)
Descriptors: Academic Achievement, Achievement Tests, Analysis of Covariance, Concept Formation