language acquisition and development from infancy through adulthood. Taking a multi-disciplinary approach, it examines what we know about language development-addressing communication development in infancy, phonological development, semantic development, morphology and syntax. Broadening the scope of study, it puts language development into larger biological, social and cultural contexts, while investigating individual differences, atypical development, literacy and even language development in adults. This edition includes more on cross-linguistic language acquisition (emphasizing Spanish), new research on the nature and treatment of language disorders in children, and new perspectives on the impact of culture on language development and variation.

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