Sources of variability in children's language growth

Janellen Huttenlocher*, Heidi Waterfall, Marina Vasilyeva, Jack Vevea, Larry V. Hedges

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

369 Scopus citations

Abstract

The present longitudinal study examines the role of caregiver speech in language development, especially syntactic development, using 47 parent-child pairs of diverse SES background from 14 to 46. months. We assess the diversity (variety) of words and syntactic structures produced by caregivers and children. We use lagged correlations to examine language growth and its relation to caregiver speech. Results show substantial individual differences among children, and indicate that diversity of earlier caregiver speech significantly predicts corresponding diversity in later child speech. For vocabulary, earlier child speech also predicts later caregiver speech, suggesting mutual influence. However, for syntax, earlier child speech does not significantly predict later caregiver speech, suggesting a causal flow from caregiver to child. Finally, demographic factors, notably SES, are related to language growth, and are, at least partially, mediated by differences in caregiver speech, showing the pervasive influence of caregiver speech on language growth.

Original languageEnglish (US)
Pages (from-to)343-365
Number of pages23
JournalCognitive Psychology
Volume61
Issue number4
DOIs
StatePublished - Dec 2010

Keywords

  • Caregiver speech
  • Child language
  • Environmental effects

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Linguistics and Language
  • Artificial Intelligence

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