NDLI: When and where to practice: social influences on the development of nut-cracking in bearded capuchins (Sapajus libidinosus)

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When and where to practice: social influences on the development of nut-cracking in bearded capuchins (Sapajus libidinosus)

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When and where to practice: social influences on the development of nut-cracking in bearded capuchins (Sapajus libidinosus)

Content Provider	Springer Nature Link
Author	Eshchar, Y. Izar, P. Visalberghi, E. Resende, B. Fragaszy, D.
Copyright Year	2016
Abstract	The habitual use of tools by wild capuchin monkeys presents a unique opportunity to study the maintenance and transmission of traditions. Young capuchins spend several years interacting with nuts before cracking them efficiently with stone tools. Using a two-observer method, we quantified the magnitude of the social influences that sustain this long period of practice. During five collection periods (over 26 months), one observer recorded the behavior of 16 immature monkeys, and another observer concurrently recorded behavior of group members in the focal monkey’s vicinity. The two-observer method provides a means to quantify distinct social influences. Data show that immatures match the behavior of the adults in time and especially in space. The rate of manipulation of nuts by the immatures quadrupled when others in the group cracked and ate nuts, and immatures were ten times more likely to handle nuts and 40 times more likely to strike a nut with a stone when they themselves were near the anvils. Moreover, immature monkeys were three times more likely to be near an anvil when others were cracking. We suggest a model for social influence on nut-cracking development, based on two related processes: (1) social facilitation from observing group members engaged in nut-cracking, and (2) opportunity for practice provided by the anvils, hammer stones and nut shells available on and around the anvils. Nut-cracking activities by others support learning by drawing immatures to the anvils, where extended practice can take place, and by providing materials for practice at these places.
Starting Page	605
Ending Page	618
Page Count	14
File Format	PDF
ISSN	14359448
Journal	Animal Cognition
Volume Number	19
Issue Number	3
e-ISSN	14359456
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-03-01
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Tool use Social learning Social facilitation Skill acquisition Artifacts Culture Behavioral Sciences Zoology Psychology Research
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Ecology, Evolution, Behavior and Systematics

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Social learning strategies for nut-cracking by tufted capuchin monkeys (Sapajus spp.)

Wild bearded capuchin (Sapajus libidinosus) select hammer tools on the basis of both stone mass and distance from the anvil

Cashew Nut Positioning during Stone Tool Use by Wild Bearded Capuchin Monkeys (Sapajus libidinosus)

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When and where to practice: social influences on the development of nut-cracking in bearded capuchins (Sapajus libidinosus)

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When and where to practice: social influences on the development of nut-cracking in bearded capuchins (Sapajus libidinosus)