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date: 24 August 2019

Abstract and Keywords

This chapter reviews recent research on the genetics of spoken language, both behavioral and molecular, and explains the methodologies for non-geneticists. Twin studies, which have benefited from statistical advances and larger sample sizes in recent decades, have progressed from merely establishing the presence of heritability in language to making claims about whether sub-domains of language (such as vocabulary and syntax) share common genes. Molecular studies have identified at least ten promising genes associated with reading impairment, Specific Language Impairment, and speech-language impairment, but in most cases have only begun to explore the pathways from gene to behavior.

Keywords: language, twins, behavior genetics, genetics, heritability, dyslexia, SLI, FOXP2

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