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Peer reviewedChletsos, Peter N.; And Others – Journal of Research and Development in Education, 1989
This article presents evidence of the reliability and validity of a new paper-and-pencil test of proportional reasoning, Paper-and-Pencil Balance Beam Test. A Total of 627 individuals, aged 8-47, participated in the 3 studies discussed. Results support previous research which correlates performance on proportional reasoning problems with…
Descriptors: Age Differences, Cognitive Development, Elementary Secondary Education, Formal Operations
Peer reviewedHafner, Bob; And Others – Journal of Research in Science Teaching, 1989
Criticizes the Mitchell and Lawson (1988) report from the viewpoint of individual interview method. Provides Lawson's reply to the comment by showing differences in research philosophy and methods. (YP)
Descriptors: Cognitive Development, College Science, Educational Research, Genetics
