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Early development of turn-taking with parents shapes vocal acoustics in infant marmoset monkeys

Author(s): Takahashi, Daniel Y.; Fenley, Alicia R.; Ghazanfar, Asif A.

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Abstract: In humans, vocal turn-taking is a ubiquitous form of social interaction. It is a communication system that exhibits the properties of a dynamical system: two individuals become coupled to each other via acoustic exchanges and mutually affect each other. Human turn-taking develops during the first year of life. We investigated the development of vocal turn-taking in infant marmoset monkeys, a New World species whose adult vocal behaviour exhibits the same universal features of human turn-taking. We find that marmoset infants undergo the same trajectory of change for vocal turn-taking as humans, and do so during the same life-history stage. Our data show that turn-taking by marmoset infants depends on the development of self-monitoring, and that contingent parental calls elicit more mature-sounding calls from infants. As in humans, there was no evidence that parental feedback affects the rate of turn-taking maturation. We conclude that vocal turn-taking by marmoset monkeys and humans is an instance of convergent evolution, possibly as a result of pressures on both species to adopt a cooperative breeding strategy and increase volubility.
Publication Date: 5-May-2016
Electronic Publication Date: 11-Apr-2016
Citation: Takahashi, Daniel Y, Fenley, Alicia R, Ghazanfar, Asif A. (2016). Early development of turn-taking with parents shapes vocal acoustics in infant marmoset monkeys. Philosophical Transactions of the Royal Society B: Biological Sciences, 371 (1693), 20150370 - 20150370. doi:10.1098/rstb.2015.0370
DOI: doi:10.1098/rstb.2015.0370
ISSN: 0962-8436
EISSN: 1471-2970
Pages: 20150370 - 20150370
Type of Material: Journal Article
Journal/Proceeding Title: Philosophical Transactions of the Royal Society B: Biological Sciences
Version: Final published version. This is an open access article.

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