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Vowel categorization correlates with speech exposure in 8-month-olds
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0001-7658-9307
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0002-8036-516X
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0002-7980-3601
2017 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

During the first year of life, infants ability to discriminate non-native speech contrasts attenuates, whereas their ability to discriminate native contrasts improves. This transition reflects the development of speech sound categorization, and is hypothesized to be modulated by exposure to spoken language. The ERP mismatch response has been used to quantify discrimination ability in infants, and its amplitude has been shown to be sensitive to amount of speech exposure on group level (Rivera-Gaxiola et al., 2011). In the present ERP-study, the difference in mismatch response amplitudes for spoken vowels and for spectrally rotated vowels, quantifies categorization in 8-month-old infants (N=15, 7 girls). This categorization measure was tested for correlation with infants? daily exposure to male speech, female speech, and the sum of male and female speech, as measured by all-day home recordings and analyzed using LENA software. A positive correlation was found between the categorization measure and total amount of daily speech exposure (r = .526, p = .044). The present study is the first to report a relation between speech exposure and speech sound categorization in infants on subject level, and the first to compensate for the acoustic part of the mismatch response in this context.

Place, publisher, year, edition, pages
2017.
National Category
General Language Studies and Linguistics
Identifiers
URN: urn:nbn:se:su:diva-151863OAI: oai:DiVA.org:su-151863DiVA, id: diva2:1175903
Conference
Workshop on Infant Language Development (WILD), Bilbao, Spain, June 15-17, 2017
Available from: 2018-01-19 Created: 2018-01-19 Last updated: 2018-02-26Bibliographically approved

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Marklund, EllenSchwarz, Iris-CorinnaLacerda, Francisco
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CiteExportLink to record
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