Internationally Adopted Children Shed Light On How Babies Learn Language

Science Daily — Each year, about 40,000 children are adopted across national lines, primarily by families from North America and Western Europe. These joyful occasions mark the growth of new families and also provide the framework for a natural experiment in language development. Although most are infants and toddlers, thousands of older children are also adopted. Typically, these older children loose their birth language rapidly and become fluent speakers of their new language.
Link:http://www.sciencedaily.com/releases/2007/01/070118181008.htm