Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/22163
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dc.contributor.authorSun, Heen
dc.contributor.authorNg, Siew Chinen
dc.contributor.authorO'Brien, Beth A.en
dc.contributor.authorFritzsche, Tomen
dc.date.accessioned2020-07-13T08:02:29Z-
dc.date.available2020-07-13T08:02:29Z-
dc.date.issued2020-
dc.identifier.citationSun, H., Ng, S. C., O’Brien, B. A., & Fritzsche, T. (2020). Child, family, and school factors in bilingual preschoolers’ vocabulary development in heritage languages. Journal of Child Language, 47(4), 817-843. https://doi.org/10.1017/S0305000919000904en
dc.identifier.issn0305-0009 (print)-
dc.identifier.issn1469-7602 (online)-
dc.identifier.urihttp://hdl.handle.net/10497/22163-
dc.descriptionThis is the final draft, after peer-review, of a manuscript published in Journal of Child Language. The published version is available online at https://doi.org/10.1017/S0305000919000904en
dc.description.abstractChild characteristics, family factors, and preschool factors are all found to affect the rate of bilingual children's vocabulary development in heritage language (HL). However, what remains unknown is the relative importance of these three sets of factors in HL vocabulary growth. The current study explored the complex issue with 457 Singaporean preschool children who are speaking either Mandarin, Malay, or Tamil as their HL. A series of internal factors (e.g., non-verbal intelligence) and external factors (e.g., maternal educational level) were used to predict children's HL vocabulary growth over a year at preschool with linear mixed effects models. The results demonstrated that external factors (i.e., family and preschool factors) are relatively more important than child characteristics in enhancing bilingual children's HL vocabulary growth. Specifically, children's language input quantity (i.e., home language dominance), input quality (e.g., number of books in HL), and HL input quantity at school (i.e., the time between two waves of tests at preschool) predict the participants’ HL vocabulary growth, with initial vocabulary controlled. The relative importance of external factors in bilingual children's HL vocabulary development is attributed to the general bilingual setting in Singapore, where HL is taken as a subject to learn at preschool and children have fairly limited exposure to HL in general. The limited amount of input might not suffice to trigger the full expression of internal resources. Our findings suggest the crucial roles that caregivers and preschools play in early HL education, and the necessity of more parental involvement in early HL learning in particular.en
dc.language.isoenen
dc.subjectHeritage language maintenanceen
dc.subjectChild characteristicsen
dc.subjectInput quantityen
dc.subjectInput qualityen
dc.subjectLanguage input-poor settingen
dc.titleChild, family, and school factors in bilingual preschoolers’ vocabulary development in heritage languagesen
dc.typePostprinten
dc.description.projectOER 09/14 RB-
dc.identifier.doi10.1017/S0305000919000904-
dc.grant.idEducation Research Funding Programme (ERFP)-
dc.grant.fundingagencyMinistry of Education, Singapore-
item.openairetypePostprint-
item.fulltextWith file-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en-
item.grantfulltextOpen-
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