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Acquisition of Basic Object Categories by Severely Handicapped Children
Susan C. Hupp and Carolyn B. Mervis
Vol. 53, No. 3 (Jun., 1982), pp. 760-767
Stable URL: http://www.jstor.org/stable/1129390
Page Count: 8
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The present study was designed to investigate category acquisition (a) as a function of initial exposure to only good exemplars as opposed to exemplars varying in goodness-of-example and (b) as a function of exposure to single as opposed to multiple exemplars. This research was undertaken within the framework of the best-example theory of categorization. Severely handicapped prelinguistic children and teenagers were selected as subjects because of the extreme difficulty they experience in generalizing. Experimental control was obtained through a repeated-measures Latin square design. The data indicated that training based on 1 or more good exemplars resulted in significantly more accurate generalization than training with a range of exemplars. In fact, training with a range of exemplars did not result in generalization above chance levels. Training based on multiple good exemplars tended to lead to more accurate generalization than training based on a single good exemplar. The results are explained in the context of the best-example theory and are briefly related to teaching practices.
Child Development © 1982 Society for Research in Child Development