Tufted capuchins (Cebus apella) attribute value to foods and tools during voluntary exchanges with humans

@article{Westergaard2004TuftedC,
  title={Tufted capuchins (Cebus apella) attribute value to foods and tools during voluntary exchanges with humans},
  author={Gregory Charles Westergaard and Chanya Liv and Andrea M. Rocca and Allison Cleveland and Stephen J. Suomi},
  journal={Animal Cognition},
  year={2004},
  volume={7},
  pages={19-24}
}
This research examined exchange and value attribution in tufted capuchin monkeys (Cebus apella). We presented subjects with opportunities to obtain various foods and a tool from an experimenter in exchange for the foods or tool in the subjects' possession. The times elapsed before the first chow biscuits were expelled and/or an exchange took place were recorded as the dependent measures. Laboratory chow biscuits, grapes, apples, and a metal bolt (a tool used to probe for syrup) were used as… CONTINUE READING

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