Genetic and Environmental Links Between Natural Language Use and Cognitive Ability in Toddlers.

Autor: Canfield CF; Boston University., Edelson LR; Boston University., Saudino KJ; Boston University.
Jazyk: angličtina
Zdroj: Child development [Child Dev] 2017 Mar; Vol. 88 (2), pp. 573-583. Date of Electronic Publication: 2016 Aug 30.
DOI: 10.1111/cdev.12604
Abstrakt: Although the phenotypic correlation between language and nonverbal cognitive ability is well-documented, studies examining the etiology of the covariance between these abilities are scant, particularly in very young children. The goal of this study was to address this gap in the literature by examining the genetic and environmental links between language use, assessed through conversational language samples, and nonverbal cognition in a sample of 3-year-old twins (N = 281 pairs). Significant genetic and nonshared environmental influences were found for nonverbal cognitive ability and language measures, including mean length of utterance and number of different words, as well as significant genetic covariance between cognitive ability and both language measures.
(© 2016 The Authors. Child Development © 2016 Society for Research in Child Development, Inc.)
Databáze: MEDLINE
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