| has gloss | eng: The KE family is an extended family about half of whom exhibit severe forms of Specific language impairment (SLI). The genetic trace across many individuals spanning three generations of the family have been the subject of intense worldwide research at least since 1990 trying to determine the genetic Origin of Language . In the scientific literature, the family is usually identified as the KE family (sometimes the K family), and as living in London. Of the 30 members across three generations about half suffer from severe deficiency, and the other half are normal to various degrees. |