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Please use this identifier to cite or link to this item: http://hdl.handle.net/1903/12038

Title: Talking Down to Toddlers: Comparing Maternal Language to Adults, Maternal Language Input to Toddlers, and Toddler Vocabulary Growth
Authors: Tuit, Lisa Joan
Advisors: Newman, Rochelle
Department/Program: Hearing and Speech Sciences
Type: Thesis
Sponsors: Digital Repository at the University of Maryland
University of Maryland (College Park, Md.)
Subjects: Speech therapy
Individual & family studies
Keywords: CDS
IDS
lexical rarity
one-word utterance
two-year-old
Issue Date: 2011
Abstract: This study considers how differences between adult-directed-speech (ADS) and child-directed speech (CDS) at 11 and 24 months affect child vocabulary development. The effects on child vocabulary development of 1) the size and stability of simplification in MLU and <italic>VOCD</italic> between ADS and CDS, 2) proportions of rare words, 3) one-word utterances and 4) nouns in CDS on toddler vocabularies are considered. Mothers' MLU and <italic>VOCD</italic> in CDS were stable, but did not relate to children's vocabulary growth, while other input factors were related to child outcomes, but were not stable. Results provide no evidence of an upper limit to beneficial complexity in CDS and do not support replacing time-lagged with concurrent measures in research.
URI: http://hdl.handle.net/1903/12038
Appears in Collections:UMD Theses and Dissertations
Hearing & Speech Sciences Theses and Dissertations

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