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ERIC Number: EJ1128654
Record Type: Journal
Publication Date: 2017
Pages: 26
Abstractor: As Provided
ISSN: ISSN-1547-5441
Input Subject Diversity Enhances Early Grammatical Growth: Evidence from a Parent-Implemented Intervention
Hadley, Pamela A.; Rispoli, Matthew; Holt, Janet K.; Papastratakos, Theodora; Hsu, Ning; Kubalanza, Mary; McKenna, Megan M.
Language Learning and Development, v13 n1 p54-79 2017
Purpose: The current study used an intervention design to test the hypothesis that parent input sentences with diverse lexical noun phrase (NP) subjects would accelerate growth in children's sentence diversity. Method: Child growth in third person sentence diversity was modeled from 21-30 months (n = 38) in conversational language samples obtained at 21, 24, 27, and 30 months. Treatment parents (n = 19) received instruction on strategies designed to increase lexical NP subjects (e.g., "The baby[underlined] is sleeping."). Instruction consisted of one group education session and two individual coaching sessions which took place when children were approximately 22-23 months of age. Results: Treatment substantially increased parents' lexical NP subject tokens and types (?[subscript p][superscript 2] = 0.45) compared to controls. Children's number of different words was a significant predictor of sentence diversity in the analyses of group treatment effects and individual input effects. Treatment condition was not a significant predictor of treatment effects on children's sentence diversity, but parents' lexical NP subject types was a significant predictor of children's sentence diversity growth, even after controlling for children's number of different words over time. Conclusions: These findings establish a link between subject diversity in parent input and children's early grammatical growth, and the feasibility of using relatively simple strategies to alter this specific grammatical property of parent language input.
Psychology Press. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) (NIH); National Science Foundation (NSF)
Authoring Institution: N/A
Identifiers - Location: Illinois
Identifiers - Assessments and Surveys: Mean Length of Utterance; MacArthur Communicative Development Inventory
Grant or Contract Numbers: R21HD071316; BCS0822513