Reviews the general trends of research concerned with second language phonology, citing several principal factors involved in foreign accent such as age and native language interference. More recent investigations show that pronunciation of a foreign language is influenced by factors of stylistic variation and stages of development unrelated to…

Discusses variation in interlanguage and suggests two hypotheses to explain such variation as multiple internal representations of a form and processing errors. Suggests that second language learners can initially represent new forms as prototype schemas, and that such non-discrete representations are a third source of variation in interlanguage.…