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Ackles, Patrick K.1
Zimmermann, Robert R.1
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Ackles, Patrick K.; Zimmermann, Robert R. – Perceptual and Motor Skills, 1978
Six groups of nursery schoolers, kindergarteners, and first graders balanced for sex were trained and tested on a series of discrimination learning and transposition problems. (Author)
Descriptors: Cognitive Development, Concept Formation, Developmental Stages, Discrimination Learning