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Do Social Conditions Affect Capuchin Monkeys’ (Cebus apella) Choices in a Quantity Judgment Task?

Overview of attention for article published in Frontiers in Psychology, January 2012
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Title
Do Social Conditions Affect Capuchin Monkeys’ (Cebus apella) Choices in a Quantity Judgment Task?
Published in
Frontiers in Psychology, January 2012
DOI 10.3389/fpsyg.2012.00492
Pubmed ID
Authors

Michael J. Beran, Bonnie M. Perdue, Audrey E. Parrish, Theodore A. Evans

Abstract

Beran et al. (2012) reported that capuchin monkeys closely matched the performance of humans in a quantity judgment test in which information was incomplete but a judgment still had to be made. In each test session, subjects first made quantity judgments between two known options. Then, they made choices where only one option was visible. Both humans and capuchin monkeys were guided by past outcomes, as they shifted from selecting a known option to selecting an unknown option at the point at which the known option went from being more than the average rate of return to less than the average rate of return from earlier choices in the test session. Here, we expanded this assessment of what guides quantity judgment choice behavior in the face of incomplete information to include manipulations to the unselected quantity. We manipulated the unchosen set in two ways: first, we showed the monkeys what they did not get (the unchosen set), anticipating that "losses" would weigh heavily on subsequent trials in which the same known quantity was presented. Second, we sometimes gave the unchosen set to another monkey, anticipating that this social manipulation might influence the risk-taking responses of the focal monkey when faced with incomplete information. However, neither manipulation caused difficulty for the monkeys who instead continued to use the rational strategy of choosing known sets when they were as large as or larger than the average rate of return in the session, and choosing the unknown (riskier) set when the known set was not sufficiently large. As in past experiments, this was true across a variety of daily ranges of quantities, indicating that monkeys were not using some absolute quantity as a threshold for selecting (or not) the known set, but instead continued to use the daily average rate of return to determine when to choose the known versus the unknown quantity.

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Mendeley readers

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Geographical breakdown

Country Count As %
Hungary 1 5%
Germany 1 5%
Unknown 18 90%

Demographic breakdown

Readers by professional status Count As %
Researcher 4 20%
Student > Ph. D. Student 4 20%
Professor > Associate Professor 3 15%
Student > Master 3 15%
Student > Bachelor 2 10%
Other 4 20%
Readers by discipline Count As %
Psychology 7 35%
Agricultural and Biological Sciences 5 25%
Arts and Humanities 2 10%
Social Sciences 2 10%
Immunology and Microbiology 1 5%
Other 1 5%
Unknown 2 10%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 November 2012.
All research outputs
#20,172,971
of 22,685,926 outputs
Outputs from Frontiers in Psychology
#23,787
of 29,409 outputs
Outputs of similar age
#221,211
of 244,123 outputs
Outputs of similar age from Frontiers in Psychology
#406
of 481 outputs
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