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dc.contributor.authorStokes, Stephanie
dc.identifier.citationStokes, Stephanie. 2010. Neighborhood Density and Word Frequency Predict Vocabulary Size in Toddlers. Journal of Speech, Language and Hearing Research. 53 (3): pp. 670-683.

Purpose: To document the lexical characteristics of neighborhood density (ND) and word frequency (WF) in the lexicons of a large sample of English-speaking toddlers. Method: Parents of 222 British-English–speaking children aged 27(±3) months completed a British adaptation of the MacArthur–Bates Communicative Development Inventory: Words and Sentences (MCDI; Klee & Harrison, 2001). Child words were coded for ND and WF, and the relationships among vocabulary, ND, and WF were examined. A cut-point of –1 SD below the mean on the MCDI classified children into one of two groups: low or high vocabulary size. Group differences on ND and WF were examined using nonparametric statistics. Results: In a hierarchical regression, ND and WF accounted for 47% and 14% of unique variance in MCDI scores, respectively. Low-vocabulary children scored significantly higher on ND and significantly lower on WF than did high-vocabulary children, but there was more variability in ND and WF for children at the lowest points of the vocabulary continuum. Conclusion: Children at the lowest points of a continuum of vocabulary size may be extracting statistical properties of the input language in a manner quite different from their more able age peers.

dc.publisherAmerican Speech-Language-Hearing Association
dc.subjectlate talkers
dc.subjectword frequency
dc.subjectvocabulary development
dc.subjectneighborhood density
dc.titleNeighborhood Density and Word Frequency Predict Vocabulary Size in Toddlers
dc.typeJournal Article
dcterms.source.titleJournal of Speech, Language and Hearing Research (JSLHR)
curtin.departmentSchool of Psychology
curtin.accessStatusFulltext not available

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