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Classification and prior assumptions about category "shape": New evidence concerning prototype and exemplar theories of categorization

Pothos, EM; Chater, N; (1997) Classification and prior assumptions about category "shape": New evidence concerning prototype and exemplar theories of categorization. In: Shafto, MG and Langley, P, (eds.) PROCEEDINGS OF THE NINETEENTH ANNUAL CONFERENCE OF THE COGNITIVE SCIENCE SOCIETY. (pp. 620 - 625). LAWRENCE ERLBAUM ASSOC PUBL

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Abstract

According to prototype theories of categorization, the cognitive system makes the default assumption that a category. C, is a roughly convex region in an internal space. This suggests that the default assumption for the "negative" category, not-C, should be the complement of this region-i.e., the internal space, minus a convex "hole." These different prior assumptions suggest potentially radically different patterns of generalization in category learning. We show experimentally that such effects do occur. These results are compatible with prototype accounts of categorization, but seem incompatible with exemplar accounts. We consider potential empirical extensions of this research, and its wider theoretical implications.

Type: Proceedings paper
Title: Classification and prior assumptions about category "shape": New evidence concerning prototype and exemplar theories of categorization
Event: 19th Annual Conference of the Cognitive-Science-Society
Location: STANFORD UNIV, Stanford, CA
Dates: 1997-08-07 - 1997-08-10
ISBN: 0-8058-2941-5
Keywords: COGNITIVE SCIENCE, REPRESENTATIONS, SIMILARITY, SELECTION
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Experimental Psychology
URI: http://discovery.ucl.ac.uk/id/eprint/124923
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