2. Second language acquisition Second language acquisition or second language learning is the process by which people learn a second language in addition to their native language(s). "Second language acquisition" refers to what the learner does; it does not refer to what the teacher does (see "language education" for work on language teaching). "Second language acquisition research" studies the psychology and sociology of the learning process. Sometimes the terms "acquisition" and "learning" are not treated as synonyms and are instead used to refer to the subconscious and conscious aspects of this process respectively Second language acquisition
3. Second Language Acquisition and its premises Second Language Acquisition and its premises Second language acquisition encompasses the acquisition of any language after the acquisition of the first language by a learner. Therefore, it incorporates learning the third or fourth languages which is closely related to bilingualism and multilingualism, and heritage language learning.
4. Interlanguage Interlanguage is a term coined by Selinker (1972). Interlanguage scholarship seeks to understand learner language on its own terms, as a natural language with its own systematic rules. Interlanguage scholars reject, at least for heuristic purposes, the view of learner language as merely an imperfect version of the target language.
5. Sequence of acquisition Sequence of acquisition A number of studies have looked into the sequence of acquisition of pronouns by learners of various Indo-European languages. These are reviewed by Ellis (1994), pp. 96–99. They show that learners begin by omitting pronouns or using them indiscriminately: for example, using "I" to refer to all agents. Learners then acquire a single pronoun feature, often person, followed by number and eventually by gender. Little evidence of interference from the learner's first language has been found; it appears that learners use pronouns based entirely on their inferences about target language structure.
