• Animal cognition · Oct 2007

    Token mediated tool exchange between tufted capuchin monkeys (Cebus apella).

    • Gregory Charles Westergaard, Theodore Avery Evans, and Sue Howell.
    • Alpha Genesis, Inc., 95 Castle Hall Road, P.O. Box 557, Yemassee, SC 29945, USA.
    • Anim Cogn. 2007 Oct 1;10(4):407-14.

    AbstractThree experiments were conducted to test whether a pair of tufted capuchin monkeys (Cebus apella) could generalize their ability to exchange tokens and tool objects with a human experimenter to similar exchanges with a conspecific partner. Monkeys were tested in side-by-side enclosures, one enclosure containing a tool-use apparatus and one or more token(s), and the other enclosure containing one or more tool object(s). The monkeys willingly transferred tokens and tools to a conspecific with little practice. Following a small amount of training, we also found that the monkeys would select situation-appropriate tokens to exchange for specific tools, but did not select appropriate tool objects in response to another monkey's token transfers. Implications regarding role reversal are discussed.

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