Genetic effects on children's conversational language use

Laura S. DeThorne, Stephen A. Petrill, Sara A. Hart, Ron W. Channell, Rebecca J. Campbell, Kirby Deater-Deckard, Lee Anne Thompson, David J. Vandenbergh

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Purpose: The present study examined the extent of genetic and environmental influences on individual differences in children's conversational language use. Method: Behavioral genetic analyses focused on conversational measures and 2 standardized tests from 380 twins (M = 7.13 years) during the 2nd year of the Western Reserve Reading Project (S. A. Petrill, K. Deater-Deckard, L. A. Thompson, L. S. DeThorne, & C. Schatschneider, 2006). Multivariate analyses using latent factors were conducted to examine the extent of genetic overlap and specificity between conversational and formalized language. Results: Multivariate analyses revealed a heritability of .70 for the conversational language factor and .45 for the formal language factor, with a significant genetic correlation of .37 between the two factors. Specific genetic effects were also significant for the conversational factor. Conclusions: The current study indicated that over half of the variance in children's conversational language skills can be accounted for by genetic effects with no evidence of significant shared environmental influence. This finding casts an alternative lens on past studies that have attributed differences in children's spontaneous language use to differences in environmental language exposure. In addition, multivariate results generally support the context-dependent construction of language knowledge, as suggested by the theory of activity and situated cognition (J. S. Brown, A. Collins, & P. Duguid, 1989; T. A. Ukrainetz, 1998), but also indicate some degree of overlap between language use in conversational and formalized assessment contexts.

Original languageEnglish (US)
Pages (from-to)423-435
Number of pages13
JournalJournal of Speech, Language, and Hearing Research
Volume51
Issue number2
DOIs
StatePublished - Apr 1 2008

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Child Language
Language
language
Multivariate Analysis
Behavioral Genetics
knowledge of languages
Environmental Exposure
Individuality
Cognition
Lenses
Language Use
Reading
cognition

All Science Journal Classification (ASJC) codes

  • Language and Linguistics
  • Linguistics and Language
  • Speech and Hearing

Cite this

DeThorne, L. S., Petrill, S. A., Hart, S. A., Channell, R. W., Campbell, R. J., Deater-Deckard, K., ... Vandenbergh, D. J. (2008). Genetic effects on children's conversational language use. Journal of Speech, Language, and Hearing Research, 51(2), 423-435. https://doi.org/10.1044/1092-4388(2008/031)
DeThorne, Laura S. ; Petrill, Stephen A. ; Hart, Sara A. ; Channell, Ron W. ; Campbell, Rebecca J. ; Deater-Deckard, Kirby ; Thompson, Lee Anne ; Vandenbergh, David J. / Genetic effects on children's conversational language use. In: Journal of Speech, Language, and Hearing Research. 2008 ; Vol. 51, No. 2. pp. 423-435.
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DeThorne, LS, Petrill, SA, Hart, SA, Channell, RW, Campbell, RJ, Deater-Deckard, K, Thompson, LA & Vandenbergh, DJ 2008, 'Genetic effects on children's conversational language use', Journal of Speech, Language, and Hearing Research, vol. 51, no. 2, pp. 423-435. https://doi.org/10.1044/1092-4388(2008/031)

Genetic effects on children's conversational language use. / DeThorne, Laura S.; Petrill, Stephen A.; Hart, Sara A.; Channell, Ron W.; Campbell, Rebecca J.; Deater-Deckard, Kirby; Thompson, Lee Anne; Vandenbergh, David J.

In: Journal of Speech, Language, and Hearing Research, Vol. 51, No. 2, 01.04.2008, p. 423-435.

Research output: Contribution to journalArticle

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AU - DeThorne, Laura S.

AU - Petrill, Stephen A.

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N2 - Purpose: The present study examined the extent of genetic and environmental influences on individual differences in children's conversational language use. Method: Behavioral genetic analyses focused on conversational measures and 2 standardized tests from 380 twins (M = 7.13 years) during the 2nd year of the Western Reserve Reading Project (S. A. Petrill, K. Deater-Deckard, L. A. Thompson, L. S. DeThorne, & C. Schatschneider, 2006). Multivariate analyses using latent factors were conducted to examine the extent of genetic overlap and specificity between conversational and formalized language. Results: Multivariate analyses revealed a heritability of .70 for the conversational language factor and .45 for the formal language factor, with a significant genetic correlation of .37 between the two factors. Specific genetic effects were also significant for the conversational factor. Conclusions: The current study indicated that over half of the variance in children's conversational language skills can be accounted for by genetic effects with no evidence of significant shared environmental influence. This finding casts an alternative lens on past studies that have attributed differences in children's spontaneous language use to differences in environmental language exposure. In addition, multivariate results generally support the context-dependent construction of language knowledge, as suggested by the theory of activity and situated cognition (J. S. Brown, A. Collins, & P. Duguid, 1989; T. A. Ukrainetz, 1998), but also indicate some degree of overlap between language use in conversational and formalized assessment contexts.

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DeThorne LS, Petrill SA, Hart SA, Channell RW, Campbell RJ, Deater-Deckard K et al. Genetic effects on children's conversational language use. Journal of Speech, Language, and Hearing Research. 2008 Apr 1;51(2):423-435. https://doi.org/10.1044/1092-4388(2008/031)