Infants relax in response to unfamiliar foreign lullabies

Author:

Bainbridge Constance,Bertolo Mila,Youngers Julie,Atwood S.ORCID,Yurdum Lidya,Simson Jan,Lopez Kelsie,Xing Feng,Martin Alia,Mehr Samuel AORCID

Abstract

Music is characterized by acoustical forms that are predictive of its behavioral functions. For example, adult listeners accurately identify unfamiliar lullabies as infant-directed on the basis of their musical features alone. This property could reflect a function of listeners’ experiences, the basic design of the human mind, or both. Here, we show that American infants (N = 144) relax in response to 8 unfamiliar foreign lullabies, relative to matched non-lullaby songs from other foreign societies, as indexed by heart rate, pupillometry, and electrodermal activity. They do so consistently throughout the first year of life, suggesting the response is not a function of their musical experiences, which are limited relative to those of adults. The infants’ parents overwhelmingly chose lullabies as the songs that they themselves would use to calm their fussy infant, despite their unfamiliarity. Together, these findings suggest that infants are predisposed to respond to universal features of lullabies.

Publisher

Center for Open Science

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