Second language acquisition

Abstract

Introduction The term second language acquisition (SLA) refers to the processes through which someone acquires one or more second or foreign languages. SLA researchers look at acquisition in naturalistic contexts (where learners pick up the language informally through interacting in the language) and in classroom settings. Researchers are interested in both product (the language used by learners at different stages in the acquisition process) and process (the mental process and environmental factors that influence the acquisition process). In this chapter I trace the development of SLA from its origins in contrastive analysis. This is followed by a selective review of research, focusing on product-oriented studies of stages that learners pass through as they acquire another language, as well as investigations into the processes underlying acquisition. The practical implications of research are then discussed, followed by a review of current and future trends and directions. Background The discipline now known as SLA emerged from comparative studies of similarities and differences between languages. These studies were conducted in the belief that a learner's first language (L1) has an important influence on the acquisition of a second (L2), resulting in the ‘contrastive analysis’ (CA) hypothesis. Proponents of contrastive analysis argued that where L1 and L2 rules are in conflict, errors are likely to occur which are the result of ‘interference’ between L1 and L2. For example, the hypothesis predicted that Spanish L1 learners would tend, when learning English, to place the adjective after the noun as is done in Spanish, rather than before it.

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