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A Longitudinal Investigation of the Role of Quantity and Quality of Child-Directed Speech in Vocabulary Development
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A Longitudinal Investigation of the Role of Quantity and Quality of Child-Directed Speech in Vocabulary Development
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Journal Article
A Longitudinal Investigation of the Role of Quantity and Quality of Child-Directed Speech in Vocabulary Development
2012
Overview
Quantity and quality of caregiver input was examined longitudinally in a sample of 50 parent—child dyads to determine which aspects of input contribute most to children's vocabulary skill across early development. Measures of input gleaned from parent—child interactions at child ages 18, 30, and 42 months were examined in relation to children's vocabulary skill on a standardized measure 1 year later (e.g., 30, 42, and 54 months). Results show that controlling for socioeconomic status, input quantity, and children's previous vocabulary skill; using a diverse and sophisticated vocabulary with toddlers; and using decontextualized language (e.g., narrative) with preschoolers explains additional variation in later vocabulary ability. The differential effects of various aspects of the communicative environment at several points in early vocabulary development are discussed.
Publisher
Blackwell Publishing Ltd,Wiley Blackwell,Wiley-Blackwell,Oxford University Press
