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Infants’ vocalizations at 6 months predict their productive vocabulary at one year

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Schaadt,  Gesa
Department of Education and Psychology, FU Berlin, Germany;
Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Männel,  Claudia
Clinic for Cognitive Neurology, University of Leipzig, Germany;
Department of Audiology and Phoniatrics, Charité University Medicine Berlin, Germany;
Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Werwach, A., Mürbe, D., Schaadt, G., & Männel, C. (2021). Infants’ vocalizations at 6 months predict their productive vocabulary at one year. Infant Behavior and Development, 64: 101588. doi:10.1016/j.infbeh.2021.101588.


Cite as: https://hdl.handle.net/21.11116/0000-0008-C434-0
Abstract
Long before their first words, children communicate by using speech-like vocalizations. These protophones might be indicative of infants' later language development. We here examined infants' (n = 56) early vocalizations at 6 months (vocal reactivity scale of the IBQ-R) as a predictor of their expressive and receptive language at 12 months (German version of the CDI). Regression analyses revealed vocalizations to significantly predict expressive, but not receptive language. Our findings in German-learning 6-month-olds extend previous predictive evidence of early vocalizations reported for older infants. Together these findings are informative in light of early assessments monitoring typical and atypical language development.