Genes may be key to language delay in kids
from HealthDay News
Twins' genes may play a greater role in language delay than their environment, according to a new study. Researchers found more evidence that language traits, such as vocabulary, putting words together and grammar, were largely inherited. The study, involving 473 sets of twins, revealed that the "twinning effect" (a lower level of language performance for twins than single-born children) was greater for identical twins than non-identical twins.
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