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Carlson, Jerry S.; Wiedl, Karl Heinz – Educational and Psychological Measurement, 1976
Measures of concrete operational thought and the Raven's Coloured Progressive Matrices were factor analyzed for a sample of primary students. Results indicated that primarily perceptual abilities are required for solution of the Piagetian tests, although abstract reasoning is involved in the solution of matrices and in conservation of substance…
Descriptors: Cognitive Processes, Conservation (Concept), Factor Analysis, Perceptual Development
Carlson, Jerry S. – Calif J Educ Res, 1969
Descriptors: Cognitive Development, Concept Formation, Conservation (Concept), Elementary Education
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Anooshian, Linda; Carlson, Jerry S. – Human Development, 1973
Tests designed to measure conservation, visual memory, and static and anticipatory imagery were administered to 1st and 2nd grade children. Conservation and memory correlated significantly with IQ. The different mental processes may be involved in the development of anticipatory imagery and conservation. (CS)
Descriptors: Conservation (Concept), Elementary School Students, Intellectual Development, Memory
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Carlson, Jerry S.; Michalson, Linda H. – American Journal of Mental Deficiency, 1973
Descriptors: Adolescents, Conservation (Concept), Exceptional Child Research, Mental Retardation
Carlson, Jerry S. – J Psychol, 1970
Descriptors: Behavioral Science Research, Cognitive Development, Cognitive Processes, Comparative Testing