The Blackwell Handbook of Language Development provides a comprehensive treatment of the major topics and current concerns in the field. Including new academic terrain such as brain development, computational skills, bilingualism, education, and cross-linguistic comparisons, this volume explores the progress of twenty-first-century research in language development while considering its precursors and looking towards promising research topics for the future. This balanced and accessible resource collects the work of a generation of researchers who are enlarging the field to consider internal and external bases for language development and to address a wide range of language development outcomes.