A Longitudinal Investigation of the Role of Quantity and Quality of Child-Directed Speech in Vocabulary Development
Child Development, 06/21/2012
Rowe ML et al. – 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.