More than five thousand languages are currently spoken around the globe. Learning to speak one of them is virtually effortless for most of us, so why is it commonly so difficult to learn a second language? Unraveling this mystery, two top researchers in the field explain how language acquisition can[...]

Bilingualism in Development is an examination of the language and cognitive development of bilingual children focusing primarily on the preschool years. It begins by defining the territory for what is included in bilingualism and how language proficiency can be conceptualized. Using these constrain[...]