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Hayiou-Thomas, Marianna E.; Dale, Philip S.; Plomin, Robert – Journal of Speech, Language, and Hearing Research, 2014
Purpose: The authors of this article examined the etiology of developmental language impairment (LI) at 4 and 12 years of age, as well as the relationship between the 2. Method: Phenotypic and quantitative genetic analyses using longitudinal data from the Twins Early Development Study (Oliver & Plomin, 2007) were conducted. A total of 2,923…
Descriptors: Language Impairments, Prediction, Etiology, Twins