Measuring Growth in Bilingual and Monolingual Children's English Productive Vocabulary Development: The Utility of Combining Parent and Teacher Report

Authors: Vagh, Shaher Banu¹; Pan, Barbara Alexander¹; Mancilla-Martinez, Jeannette¹

Source: Child Development, Volume 80, Number 5, September/October 2009 , pp. 1545-1563(19)

Publisher: Blackwell Publishing

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Abstract:

This longitudinal study examined growth in the English productive vocabularies of bilingual and monolingual children between ages 24 and 36 months and explored the utility and validity of supplementing parent reports with teacher reports to improve the estimation of children's vocabulary. Low-income, English-speaking and English/Spanish-speaking parents and Early Head Start and Head Start program teachers completed the MacArthur-Bates Communicative Development Inventory, Words and Sentences for 85 children. Results indicate faster growth rates for monolingual than for bilingual children and larger vocabularies for bilingual children who spoke mostly English than mostly Spanish at home. Parent-teacher composite reports, like parent reports, significantly related to children's directly assessed productive vocabulary at ages 30 and 36 months, but parent reports fit the model better. Implications for vocabulary assessment are discussed.

Document Type: Research article

DOI: 10.1111/j.1467-8624.2009.01350.x

Affiliations: 1: Harvard Graduate School of Education

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