Bilinguals often report that they feel like a different person in their two languages. In the words of one bilingual in Koven's book, "When I speak Portuguese, automatically, I'm in a different world...it's a different color." Although testimonials like this abound in everyday conversation among bilinguals, there has been scant systematic investigation of this intriguing phenomenon. Focusing on French-Portuguese bilinguals, the adult children of Portuguese migrants in France, this book provides an empirically grounded, theoretical account of how the same speakers enact, experience, and are...