Document Detail

Inferences about guessing and knowing by chimpanzees (Pan troglodytes).
MedLine Citation:
PMID:  2225758     Owner:  NLM     Status:  MEDLINE    
The visual perspective-taking ability of 4 chimpanzees (Pan troglodytes) was investigated. The subjects chose between information about the location of hidden food provided by 2 experimenters who randomly alternated between two roles (the guesser and the knower). The knower baited 1 of 4 obscured cups so that the subjects could watch the process but could not see which of the cups contained the reward. The guesser waited outside the room until the food was hidden. Finally, the knower pointed to the correct cup while the guesser pointed to an incorrect one. The chimpanzees quickly learned to respond to the knower. They also showed transfer to a novel variation of the task, in which the guesser remained inside the room and covered his head while the knower stood next to him and watched a third experimenter bait the cups. The results are consistent with the hypothesis that chimpanzees are capable of modeling the visual perspectives of others.
D J Povinelli; K E Nelson; S T Boysen
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Publication Detail:
Type:  Journal Article; 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:  104     ISSN:  0735-7036     ISO Abbreviation:  J Comp Psychol     Publication Date:  1990 Sep 
Date Detail:
Created Date:  1990-12-05     Completed Date:  1990-12-05     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:  203-10     Citation Subset:  IM    
Department of Anthropology, Yale University, New Haven, Connecticut 06520.
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MeSH Terms
Appetitive Behavior*
Concept Formation
Imitative Behavior
Pan troglodytes / psychology*
Problem Solving*
Psychomotor Performance*
Grant Support

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