Since "Baby Talk" became the subject of research thirty years ago, the linguistic environment of infants and toddlers has been widely studied. This book, as well as being an up-to-date statement of the facts and controversies surrounding "Baby Talk," its nature and likely effects, also examines language acquisition in different cultures and family contexts, typical and atypical learners, and in second and foreign language learners. It has been designed as a sequel to Snow and Ferguson's now famous volume Talking to Children.