A collection of articles by language scientists. *Language Acquisition* offers, in one convenient reader, work by the most outstanding researchers in each field and is intended as a snapshot of the sort of theory and research taking place in language acquisition in the 1990s. All of the articles and chapters were chosen to reflect topics and debates of contemporary interest, and all take an interdisciplinary approach to language development, relating the study of how a child comes to possess a language to issues within linguistics, computational theory, biology, social cognition, and comparative psychology.