“some linguists have also concluded that, while the innatist perspective provides a plausible explanation for first language acquisition, something else is required for second language acquisition, since it so often falls short of full success. From the cognitive psychology perspective, however, first and second language acquisition are seen as drawing on the same processes of perception, memory, categorization, and generalization. The difference lies in the circumstances of learning as well as in what the learners already know about language and how that prior knowledge shapes their perception of the new language.”