Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months

Abstract In early infancy, melody provides the most salient prosodic element for language acquisition and there is huge evidence for infants’ precocious aptitudes for musical and speech melody perception. Yet, a lack of knowledge remains with respect to melody patterns of infants’ vocalisations. In...

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Autores principales:	Kathleen Wermke, Michael P. Robb, Philip J. Schluter
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/928a0f7c097b4d989b5f5319acf40e50
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spelling	oai:doaj.org-article:928a0f7c097b4d989b5f5319acf40e502021-12-02T14:03:45ZMelody complexity of infants’ cry and non-cry vocalisations increases across the first six months10.1038/s41598-021-83564-82045-2322https://doaj.org/article/928a0f7c097b4d989b5f5319acf40e502021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83564-8https://doaj.org/toc/2045-2322Abstract In early infancy, melody provides the most salient prosodic element for language acquisition and there is huge evidence for infants’ precocious aptitudes for musical and speech melody perception. Yet, a lack of knowledge remains with respect to melody patterns of infants’ vocalisations. In a search for developmental regularities of cry and non-cry vocalisations and for building blocks of prosody (intonation) over the first 6 months of life, more than 67,500 melodies (fundamental frequency contours) of 277 healthy infants from monolingual German families were quantitatively analysed. Based on objective criteria, vocalisations with well-identifiable melodies were grouped into those exhibiting a simple (single-arc) or complex (multiple-arc) melody pattern. Longitudinal analysis using fractional polynomial multi-level mixed effects logistic regression models were applied to these patterns. A significant age (but not sex) dependent developmental pattern towards more complexity was demonstrated in both vocalisation types over the observation period. The theoretical concept of melody development (MD-Model) contends that melody complexification is an important building block on the path towards language. Recognition of this developmental process will considerably improve not only our understanding of early preparatory processes for language acquisition, but most importantly also allow for the creation of clinically robust risk markers for developmental language disorders.Kathleen WermkeMichael P. RobbPhilip J. SchluterNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kathleen Wermke Michael P. Robb Philip J. Schluter Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
description	Abstract In early infancy, melody provides the most salient prosodic element for language acquisition and there is huge evidence for infants’ precocious aptitudes for musical and speech melody perception. Yet, a lack of knowledge remains with respect to melody patterns of infants’ vocalisations. In a search for developmental regularities of cry and non-cry vocalisations and for building blocks of prosody (intonation) over the first 6 months of life, more than 67,500 melodies (fundamental frequency contours) of 277 healthy infants from monolingual German families were quantitatively analysed. Based on objective criteria, vocalisations with well-identifiable melodies were grouped into those exhibiting a simple (single-arc) or complex (multiple-arc) melody pattern. Longitudinal analysis using fractional polynomial multi-level mixed effects logistic regression models were applied to these patterns. A significant age (but not sex) dependent developmental pattern towards more complexity was demonstrated in both vocalisation types over the observation period. The theoretical concept of melody development (MD-Model) contends that melody complexification is an important building block on the path towards language. Recognition of this developmental process will considerably improve not only our understanding of early preparatory processes for language acquisition, but most importantly also allow for the creation of clinically robust risk markers for developmental language disorders.
format	article
author	Kathleen Wermke Michael P. Robb Philip J. Schluter
author_facet	Kathleen Wermke Michael P. Robb Philip J. Schluter
author_sort	Kathleen Wermke
title	Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
title_short	Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
title_full	Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
title_fullStr	Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
title_full_unstemmed	Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
title_sort	melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/928a0f7c097b4d989b5f5319acf40e50
work_keys_str_mv	AT kathleenwermke melodycomplexityofinfantscryandnoncryvocalisationsincreasesacrossthefirstsixmonths AT michaelprobb melodycomplexityofinfantscryandnoncryvocalisationsincreasesacrossthefirstsixmonths AT philipjschluter melodycomplexityofinfantscryandnoncryvocalisationsincreasesacrossthefirstsixmonths
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Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months

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