| Implicit and explicit category learning by capuchin monkeys (Cebus apella). | |
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MedLine Citation:
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PMID: 22023264 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Current theories of human categorization differentiate an explicit, rule-based system of category learning from an implicit system that slowly associates regions of perceptual space with response outputs. The researchers extended this theoretical differentiation to the category learning of New World primates. Four capuchins (Cebus apella) learned categories of circular sine-wave gratings that varied in bar spatial frequency and orientation. The rule-based and information-integration tasks, respectively, had one-dimensional and two-dimensional solutions. Capuchins, like humans, strongly dimensionalized the stimuli and learned the rule-based task more easily. The results strengthen the suggestion that nonhuman primates have some structural components of humans' capacity for explicit categorization, which in humans is linked to declarative cognition and consciousness. The results also strengthen the primate contrast to other vertebrate species that may lack the explicit system. Therefore, the results raise important questions about the origins of the explicit categorization system during cognitive evolution and about its overall phylogenetic distribution. |
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Authors:
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J David Smith; Matthew J Crossley; Joseph Boomer; Barbara A Church; Michael J Beran; F Gregory Ashby |
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Publication Detail:
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Type: Journal Article; Research Support, American Recovery and Reinvestment Act; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S. Date: 2011-10-24 |
Journal Detail:
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Title: Journal of comparative psychology (Washington, D.C. : 1983) Volume: 126 ISSN: 1939-2087 ISO Abbreviation: J Comp Psychol Publication Date: 2012 Aug |
Date Detail:
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Created Date: 2012-08-21 Completed Date: 2013-01-18 Revised Date: 2013-04-16 |
Medline Journal Info:
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Nlm Unique ID: 8309850 Medline TA: J Comp Psychol Country: United States |
Other Details:
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Languages: eng Pagination: 294-304 Citation Subset: IM |
Copyright Information:
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2012 APA, all rights reserved |
Affiliation:
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Department of Psychology, University at Buffalo, State University of New York, Buffalo, NY 14260, USA. psysmith@buffalo.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cebus / psychology* Discrimination Learning* Female Judgment Male Photic Stimulation Visual Perception |
| Grant Support | |
ID/Acronym/Agency:
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3P01HD038051-10S1/HD/NICHD NIH HHS; HD-060563/HD/NICHD NIH HHS; P01 HD038051/HD/NICHD NIH HHS; P01 HD060563/HD/NICHD NIH HHS; R01 HD061455/HD/NICHD NIH HHS; R01 HD061455-03/HD/NICHD NIH HHS; R01 MH3760-2/MH/NIMH NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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