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Bernard, Michael E.; Klausmeier, Herbert J. – 1973
The purpose of this study was to empirically test a set of predictions implied by the Model of Conceptual Learning and Development using the concept of cutting tool. Four subtests were developed to assess a subject's ability to perform at each of four successive levels of concept attainment (concrete, identity, classificatory and formal). In…
Descriptors: Age, Cognitive Development, Cognitive Measurement, Cognitive Processes