Article
Bivariate genetic analyses of stuttering and nonfluency in a large sample of 5-year-old twins.
Journal of speech, language, and hearing research : JSLHR - 1 Jun 2010
van Beijsterveldt Catharina Eugenie Maria, Felsenfeld Susan, Boomsma Dorret Irene
Abstract excerpt
PURPOSE: Behavioral genetic studies of speech fluency have focused on participants who present with clinical stuttering. Knowledge about genetic influences on the development and regulation of normal speech fluency is limited. The primary aims of this study were to identify the heritability of stuttering and high nonfluency and to assess the relative contribution of genetic and environmental factors to the...
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