On the development of gestural organization: A cross-sectional study of vowel-to-vowel anticipatory coarticulation

PloS One
Elina Rubertus, Aude Noiray

Abstract

In the first years of life, children differ greatly from adults in the temporal organization of their speech gestures in fluent language production. However, dissent remains as to the maturational direction of such organization. The present study sheds new light on this process by tracking the development of anticipatory vowel-to-vowel coarticulation in a cross-sectional investigation of 62 German children (from 3.5 to 7 years of age) and 13 adults. It focuses on gestures of the tongue, a complex organ whose spatiotemporal control is indispensable for speech production. The goal of the study was threefold: 1) investigate whether children as well as adults initiate the articulation for a target vowel in advance of its acoustic onset, 2) test if the identity of the intervocalic consonant matters and finally, 3) describe age-related developments of these lingual coarticulatory patterns. To achieve this goal, ultrasound tongue imaging was used to record lingual movements and quantify changes in coarticulation degree as a function of consonantal context and age. Results from linear mixed effects models indicate that like adults, children initiate vowels' lingual gestures well ahead of their acoustic onset. Second, while the identity...Continue Reading

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Citations

Aug 30, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Hayo TerbandBen Maassen
Aug 30, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Aude NoirayMark Tiede
Jan 11, 2020·Frontiers in Psychology·Aude NoirayLisa Hintermeier
Sep 3, 2020·Behavior Research Methods·Phil J HowsonMelissa A Redford
Mar 2, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Phil J Howson, Melissa A Redford

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Methods Mentioned

BETA
PCA

Software Mentioned

multcomp
WebMAUSBasic
SOLLAR
lme4
MATLAB
R

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