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. 2011 Jan;47(1):67-76.
doi: 10.1037/a0020722.

Imitation and repetition of prosodic contour in vocal interaction at 3 months

Maya Gratier  1 , Emmanuel Devouche
Affiliations

Imitation and repetition of prosodic contour in vocal interaction at 3 months

Maya Gratier et al. Dev Psychol. 2011 Jan.

Abstract

This study investigates vocal imitation of prosodic contour in ongoing spontaneous interaction with 10- to 13-week-old infants. Audio recordings from naturalistic interactions between 20 mothers and infants were analyzed using a vocalization coding system that extracted the pitch and duration of individual vocalizations. Using these data, the authors categorized a sample of 1,359 vocalizations on the basis of 7 predetermined contours. Pairs of identical successive vocalizations were considered to be imitations if they involved both partners or repetitions if they were produced by the same partner. Results show that not only do mothers and infants imitate and repeat prosodic contour types in the course of vocal interaction but they do so selectively. Indeed, different contours are imitated and repeated by each partner. These findings suggest that imitation and repetition of prosodic contours have specific functions for communication and vocal development in the 3rd month of life.

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