Document Detail

Numerical competence in a chimpanzee (Pan troglodytes).
MedLine Citation:
PMID:  2924529     Owner:  NLM     Status:  MEDLINE    
A chimpanzee (Pan troglodytes), trained to count foods and objects by using Arabic numbers, demonstrated the ability to sum arrays of 0-4 food items placed in 2 of 3 possible sites. To address representational use of numbers, we next baited sites with Arabic numbers as stimuli. In both cases performance was significantly above chance from the first sessions, which suggests that without explicit training in combining arrays, the animal was able to select the correct arithmetic sum for arrays of foods or Arabic numbers under novel test conditions. These findings demonstrate that counting strategies and the representational use of numbers lie within the cognitive domain of the chimpanzee and compare favorably with the spontaneous use of addition algorithms demonstrated in preschool children.
S T Boysen; G G Berntson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of comparative psychology (Washington, D.C. : 1983)     Volume:  103     ISSN:  0735-7036     ISO Abbreviation:  J Comp Psychol     Publication Date:  1989 Mar 
Date Detail:
Created Date:  1989-04-24     Completed Date:  1989-04-24     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8309850     Medline TA:  J Comp Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  23-31     Citation Subset:  IM    
Primate Cognition Project, Ohio State University, Columbus 43210.
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MeSH Terms
Concept Formation
Pan troglodytes*
Problem Solving*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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