ABSTRACT
The field of second language acquisition (SLA), a relatively new field of academic study, traces its roots only to the second half of the last century. The field of SLA has roots in various disciplines and areas of study, including the fields of child first language (L1) acquisition, linguistics, psychology, and language pedagogy. Thus, SLA has moved well beyond a one-sided focus on learner internal mechanisms, be they linguistic or cognitive. A great deal of SLA research has concentrated on differences between L1 and second language (L2) acquisition in terms of ultimate attainment. Some SLA researchers argue that learning is based on experience of language usage. More recent SLA research conducted within a cognitivist approach has been designed to provide online measures of processing and interpretation of the L2 and has thus shifted somewhat away from the analysis of naturalistic corpora.
