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Specific language impairment (SLI) is diagnosed when a child's language development is deficient for no obvious reason. For many years, there was a tendency to assume that SLI was caused by factors such as poor parenting, subtle brain damage around the time of birth, or transient hearing loss. Subsequently it became clear that these factors were for less important that genes in determining risk for SLI. A quest to find « the gene for SLI » was undertaken, but it soon became apparent that no single cause could account for all cases. Furthermore, although fascinating cases of SLI caused by a single mutation have been discovered, in most children the disorder has a more complex basis, with several genetic and environmental risk factors interacting. The clearest evidence for genetic effects has come from studies that diagnosed SLI using theoretically motivated measures of underlying cognitive deficits rather than conventional clinical criteria. © copyright Anae.

Type

Journal article

Journal

ANAE - Approche Neuropsychologique des Apprentissages chez l'Enfant

Publication Date

01/09/2008

Volume

20

Pages

196 - 201