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The language learning infant: Effects of speech input, vocal output, and feedback
Stockholm University, Faculty of Humanities, Department of Linguistics.ORCID iD: 0000-0003-3981-2551
2009 (English)Doctoral thesis, monograph (Other academic)
Abstract [en]

This thesis studies the characteristics of the acoustic signal in speech, especially in speech directed to infants and in infant vocal development, to gain insight on essential aspects of speech processing, speech production and communicative interaction in early language acquisition. Three sets of experimental studies are presented in this thesis. From a phonetic point of view they investigate the fundamental processes involved in first language acquisition.

The first set (study 1.1 and study 1.2) investigated how linguistic structure in the speech signal can be derived and which strategy infants and adults use to process information depending on its presentation. The second set (study 2.1 and study 2.2) studied acoustic consequences of the anatomical geometry of the infant vocal tract and the development of sensory-motor control for articulatory strategies. The third set of studies (study 3.1 and study 3.2) explored the infant's interaction with the linguistic environment, specifically how vocal imitation and reinforcement may assist infants to converge towards adult-like speech.

The first set of studies suggests that structure and quality of simultaneous sensory input impact on the establishment of initial linguistic representations. The second set indicates that the anatomy of the infant vocal tract does not constrain the production of adult-like speech sounds and that some degree of articulatory motor control is present from six months of age. The third set of studies suggests that the adult interprets and reinforces vocalizations produced by the infant in a developmentally-adjusted fashion that can guide the infant towards the sounds of the ambient language. The results are discussed in terms of essential aspects of early speech processing and speech production that can be accounted for by biological general purpose mechanisms in the language learning infant.

 

Place, publisher, year, edition, pages
Stockholm: Department of Linguistics, Stockholm University , 2009. , 138 p.
Keyword [en]
human, language, language acquisition, perception, production, humanoid, development, model, embodied system, speech signal processing, vocal tract morphology, acoustic, speech input, information processing, scaling, interaction, growth, infant, imitation, feedback, perceptual salience, modeling
National Category
General Language Studies and Linguistics
Research subject
Phonetics
Identifiers
URN: urn:nbn:se:su:diva-26735ISBN: 978-91-7155-851-0 (print)OAI: oai:DiVA.org:su-26735DiVA: diva2:211263
Public defence
2009-05-14, De Geer salen, Geovetenskapens hus, Svante Arrhenius väg 8 A, Stockholm, 13:00 (English)
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Note
För att köpa boken skicka en beställning till exp@ling.su.se/ To order the book send an e-mail to exp@ling.su.seAvailable from: 2009-04-23 Created: 2009-04-08 Last updated: 2014-04-29Bibliographically approved

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