Behavioral and Brain Sciences

Open Peer Commentary

“Language impairment gene” does not necessarily equate to “language gene”

Lance Workman a1 [email protected]
a1 Department of Psychology, School of Social Sciences, Bath Spa University, Bath BA2 9BN, United Kingdom.

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The finding of the same language deficit in half the members of the KE family is taken as suggesting that a specific allele (FOXP2) is normally involved in the development of language. Recent studies, however, question the exclusivity of FOXP2, and it is argued that the finding of a gene that disrupts language should not be taken as strong evidence for the existence of genes that underlie it.