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Genetic Evidence for Bidirectional Effects of Early Lexical and Grammatical Development

Dionne, Ginette, Dale, Philip S, Boivin, Michel, Plomin, Robert·2003·Child Development

Abstract

This article addresses the autonomy hypothesis of vocabulary and grammar and bootstrapping mechanisms in early language development. Two birth cohorts of 1,505 and 1,049 same-sex twin pairs from the UK were assessed at 2 and 3 years on grammar and vocabulary, using adapted versions of the MacArthur Communicative Development Inventory. Vocabulary and grammar correlate strongly at both 2 and 3 years in both cohorts. Multivariate genetic modeling reveals a consistently high genetic correlation between vocabulary and grammar at 2 and 3 years. This finding suggests the same genetic influences operate for both vocabulary and grammar, a finding incompatible with traditional autonomy hypothesis, at least in early acquisition. Cross-lagged longitudinal genetic models indicate both lexical and syntactical bootstrapping operate from 2 to 3 years.

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Metadata

Authors
Dionne, G., Dale, P. S., Boivin, M., & Plomin, R.
Venue
Child Development
Published
2003-03-01
Volume
74
Issue
2
Pages
394-412
ISSN
  • 0009-3920 (ISSN-L)
  • 1467-8624
OpenAlex
W2024651185
Cited by
232
References
2
FWCI
18.20
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Genetic Evidence for Bidirectional Effects of Early Lexical and Grammatical Development. https://app.cochat.ai/papers/10.1111/1467-8624.7402005
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Dionne, G., Dale, P. S., Boivin, M., & Plomin, R. (2003). Genetic Evidence for Bidirectional Effects of Early Lexical and Grammatical Development. Child Development. https://doi.org/10.1111/1467-8624.7402005

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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