Second language acquisition research incorporating generative grammar and the role of social interaction

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This study provides the functional magnetic resonance imaging (fMRI) data to show that (1) two distinct regions of the left frontal gyrus explain individual differences in second language proficiency ; (2) post-puberty second language (L2) learners can acquire abstract and complex properties of an L2 that could not be deduced from the L2 input, suggesting the availability of an innate mechanism in SLA ; (3) availability of a language model by itself is not sufficient, as availability of communicative interaction is also necessary for the second language acquisition accompanied by changes in the brain to occur.