Second-language acquisition

Process of learning a second language

Second-language acquisition (SLA), sometimes called second-language learning—otherwise referred to as L2 acquisition, is the process by which people learn a second language. Second-language acquisition is also the scientific discipline devoted to studying that process. This involves learning an additional language after the first language is established, typically through formal instruction or immersion. A central theme in SLA research is that of interlanguage: the idea that the language that learners use is not simply the result of differences between the languages that they already know and the language that they are learning, but a complete language system in its own right, with its own systematic rules. This interlanguage gradually develops as learners are exposed to the targeted language. The order in which learners acquire features of their new language stays remarkably constant, even for learners with different native languages and regardless of whether they have had language instruction. However, languages that learners already know can have a significant influence on the process of learning a new one. This influence is known as language transfer.

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