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Cognitive Development	2
Mental Age	2
Mental Retardation	2
Comparative Analysis	1
Conservation (Concept)	1
Elementary Education	1
Feedback	1
Handicapped Children	1
Hypothesis Testing	1
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Developmental Psychology	1
Psychological Bulletin	1

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Weisz, John R.	2
Achenbach, Thomas M.	1
Yeates, Keith Owen	1

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Effects of IQ and Mental Age on Hypothesis Behavior in Normal and Retarded Children

Peer reviewed

Weisz, John R.; Achenbach, Thomas M. – Developmental Psychology, 1975

Discusses the respective roles of rate of learning and level of cognitive development in determining intellectual performance in 156 normal and retarded children matched for mental age. (Author/LLK)

Descriptors: Cognitive Development, Elementary Education, Feedback, Handicapped Children

Cognitive Development in Retarded and Nonretarded Persons: Piagetian Tests of the Similar Structure Hypothesis.

Peer reviewed

Weisz, John R.; Yeates, Keith Owen – Psychological Bulletin, 1981

Surveys 30 studies involving 104 separate tests of the "similar structure hypothesis" which holds that, when nonorganically impaired retarded and nonretarded persons are similar in developmental level, they are also similar in the processes and concepts by which they reason. (Researchers distinguished between studies that excluded…

Descriptors: Cognitive Development, Comparative Analysis, Conservation (Concept), Hypothesis Testing