Input and uptake at 7 months predicts toddler vocabulary: the role of child-directed speech and infant processing skills in language development

Rochelle Suzanne Newman · Meredith L. Rowe · Nan Bernstein Ratner

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Language Development and Disorders Phonetics and Phonology Research Child and Animal Learning Development

Abstract

Both the input directed to the child, and the child's ability to process that input, are likely to impact the child's language acquisition. We explore how these factors inter-relate by tracking the relationships among: (a) lexical properties of maternal child-directed speech to prelinguistic (7-month-old) infants (N = 121); (b) these infants' abilities to segment lexical targets from conversational child-directed utterances in an experimental paradigm; and (c) the children's vocabulary outcomes at age 2;0. Both repetitiveness in maternal input and the child's speech segmentation skills at age 0;7 predicted language outcomes at 2;0; moreover, while these factors were somewhat inter-related, they each had independent effects on toddler vocabulary skill, and there was no interaction between the two.

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References

1998Preventing Reading Difficulties in Young Children 1998Meaningful Differences in the Everyday Experience of Young American Children 1996Meaningful differences in the everyday experience of young American children 1992The CHILDES project: tools for analyzing talk 1994Variability in Early Communicative Development 2003The Specificity of Environmental Influence: Socioeconomic Status Affects Early Vocabulary Development Via Maternal Speech 1986Joint Attention and Early Language 1991Early vocabulary growth: Relation to language input and gender.

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