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Age Differences	2
Intelligence Differences	2
Logical Thinking	2
Cognitive Development	1
Cognitive Processes	1
Conservation (Concept)	1
Exceptional Child Research	1
Handicapped Children	1
Instructional Materials	1
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American Journal of Mental…	1
Child Develop	1

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Cherkes, Miriam G.	1
Rothenberg, Barbara B.	1

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Effect of Chronological Age and Mental Age on the Understanding of Rules of Logic

Peer reviewed

Cherkes, Miriam G. – American Journal of Mental Deficiency, 1975

Examined were the effects of chronological age and mental age on the understanding of logical rules by four subject groups (10- to 14-years-old): 10 average IQ Ss, 10 learning disabled Ss, 10 older educable retarded Ss and 10 younger educable retarded Ss. (Author/CL)

Descriptors: Age Differences, Cognitive Processes, Exceptional Child Research, Handicapped Children

Conservation of Number among Four-and Five-Year-Old Children: Some Methodological Considerations

Rothenberg, Barbara B. – Child Develop, 1969

Research supported by a grant from the Carnegie Corporation.

Descriptors: Age Differences, Cognitive Development, Conservation (Concept), Instructional Materials