Second language acquisition is explored in this title by the preeminent researcher and theorist Stephen Krashen. Included are these main topics: Acquisition vs Learning, Natural Order, Monitor, Input and Affective Filter.

This text explores the relationship between second language teaching practice and what is known about the process of second language acquisition and summarizes the current state of second language acquisition theory.<br />-- Draws general conclusions about the application of theory to methods and materials and describes the characteristics that effective materials should include.<br />-- Concludes that language acquisition occurs best when language is used for the purpose for which it was designed: communication.

This thoroughly updated third edition presents the main theories of language acquisition, considering their bearing on language teaching. It discusses the effects of factors such as intelligence, personality, and age. It helps teachers assess the merits of different methods and textbooks. This new edition includes more information on theories of first language acquisition and early bilingualism, and the affects of motivation and style.