Document Detail

Do rhesus monkeys (Macaca mulatta) attribute knowledge and ignorance to others?
MedLine Citation:
PMID:  1778064     Owner:  NLM     Status:  MEDLINE    
The ability of 4 rhesus monkeys (Macaca mulatta) to understand the causal connection between seeing and knowing was investigated. The subjects were tested to determine if they could discriminate between information provided by experimenters who randomly alternated between roles of guesser and knower. In a series of tests, the knower either hid food under 1 of 3 cups or watched as someone else hid the food. The guesser waited outside the room or covered her or his head until the food was hidden. The subjects watched this procedure occur but could not see which cup the food was hidden under. The knower pointed to the correct cup while the guesser pointed to an incorrect one. None of the macaques provided any evidence that they realized the different states of knowledge possessed by the guesser and knower. The results are consistent with the hypothesis that rhesus macaques are incapable of making inferences about the mental states of others.
D J Povinelli; K A Parks; M A Novak
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of comparative psychology (Washington, D.C. : 1983)     Volume:  105     ISSN:  0735-7036     ISO Abbreviation:  J Comp Psychol     Publication Date:  1991 Dec 
Date Detail:
Created Date:  1992-03-06     Completed Date:  1992-03-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8309850     Medline TA:  J Comp Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  318-25     Citation Subset:  IM    
Department of Anthropology, Yale University.
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MeSH Terms
Appetitive Behavior*
Macaca mulatta / psychology*
Mental Recall
Problem Solving*
Psychomotor Performance
Social Behavior*
Social Perception*

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

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