Genetic Influences in Different Aspects of Language Development: The Etiology of Language Skills in 4.5‐Year‐Old Twins

• DOI: 10.1111/j.1467-8624.2005.00868.x
• Publication Date: 2005-05-13T07:52:12Z
• Authors: Yulia Kovas; Marianna E. Hayio...; Bonamy Oliver; Philip S. Dale; Dorothy V. M. Bishop; Robert Plomin
• Keywords: Etiology

The genetic and environmental etiologies of diverse aspects language ability disability, including articulation, phonology, grammar, vocabulary, verbal memory, were investigated in a U.K. sample 787 pairs 4.5‐year‐old same‐sex opposite‐sex twins. Moderate influence was found for all the normal range. A similar pattern at low end distribution with exception two receptive measures. Environmental mainly due to nonshared factors, unique individual, little from shared environment most Genetic influences on disability are quantitatively qualitatively males females.