ABSTRACT
Without a doubt, second language acquisition (SLA) is complex. It is complex for at least two reasons. It involves the acquisition of a complex implicit linguistic system consisting of lexical entries and their features and forms, an abstract syntactic system, a phonological system, and rules on pragmatic use of language, among other components related to language. In addition, acquisition cannot be reduced to a single process. SLA is best conceived of as involving multiple processes that in turn may contain subprocesses that work at every stage of acquisition.
