Nativization is the process through which in the virtual absence of native speakers, a language undergoes new phonological, morphological, syntactical, semantic and stylistic changes, and gains new native speakers. This happens necessarily when a second language used by adult parents becomes the native language of their children. Nativization has been of particular interest to linguists, and to creolists more specifically, where the second language concerned is a pidgin.
It was previously thought by scholars that nativization was simply interlanguage fossilization, a step taken during second-language acquisition by learners who apply rules of their first language to their second. However, recent studies now suggest that nativization is simply another form of language acquisition. Several explanations of creole genesis have relied on prior nativization of a pidgin as a stage in achieving creoleness. This is true for Hall's (1966) notion of the pidgin-creole life cycle as well as Bickerton's language bioprogram theory.