Document Detail

Goal-oriented, flexible use of numerical operations by monkeys.
MedLine Citation:
PMID:  23299224     Owner:  NLM     Status:  MEDLINE    
Previous studies have shown that elementary aspects of numerical abilities have developed in non-human primates. In the present study, we explored the potential for the development of a novel ability in the use of numerical operations by macaque monkeys (Macaca fuscata): adequate selection of a series of numerical actions toward achieving a behavioral goal. We trained monkeys to use a pair of devices to selectively add or subtract items to/from a digital array in order to match a previously viewed sample array. The monkeys determined whether to add or subtract on the basis of the feedback about numerosity given to the monkeys, which was displayed as an outcome of each step of the numerical operation. We also found that monkeys adapted flexibly to changes in the numerical rule that determined the relationship between device use and numerical operation. Our model analysis found that the numerosity-based model was a better fit for the monkeys' performance than was the reward-expectation-based model. Such a capacity for goal-oriented selection of numerical operations suggests a mechanism by which monkeys use numerical representations for purposeful behaviors.
Sumito Okuyama; Jun-ichi Iwata; Jun Tanji; Hajime Mushiake
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2013-01-09
Journal Detail:
Title:  Animal cognition     Volume:  16     ISSN:  1435-9456     ISO Abbreviation:  Anim Cogn     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-04-15     Completed Date:  2014-01-21     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  9814573     Medline TA:  Anim Cogn     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  509-18     Citation Subset:  IM    
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MeSH Terms
Macaca / psychology*
Problem Solving
Task Performance and Analysis

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

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