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Science 27 January 1967:
Vol. 155. no. 3761, pp. 484 - 486
DOI: 10.1126/science.155.3761.484
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Articles

Training without Reward: Traditional Training of Pig-Tailed Macaques as Coconut Harvesters

Mireille Bertrand 1

1 Psychology Department, Johns Hopkins University, Baltimore, Maryland 21218

Macaca nemestrina, the pig-tailed macaque, is the only monkey regularly and extensively used for work. For centuries it has been trained in Southeast Asia to pick coconuts and other fruits. The training is based exclusively on punishment and avoidance of punishment.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)