Research suggests that late bilinguals may have persistent difficulties with the automatic access and use of some second language structures because of a lack of underlying integrated knowledge of those structures. In contrast, early bilinguals show advantages in aspects of language use that require this type of automatic knowledge. This study…

Diglossia, or the use of two forms of a language in a single speech community, is widespread. Differences between the nonstandard form, used for everyday conversations, and the standard form, used for formal occasions and writing, often extend to phonology as well as grammar and vocabulary. Most preschoolers from diglossic families are routinely…