Constraints on code switching: how universal are they?

Link: http://books.google.com.br/books?hl=pt-BR&lr=&id=zfYYXKxPek0C&oi=fnd&pg=PA257&dq=code+switching&ots=f2rT-bzWBu&sig=saSf5wkepfvYVjd7CFi_9FDoS74#v=onepage&q=code%20switching&f=false

Summary: This is the online version of Michael Clyne’s Constraints on code switching: how universal are they?, and essay originally published within the book The Bilingualism Reader, edited by Li Wei. Clyne considers the definition of code switching as it was conceived by Haugen (1956), who pointed out the difference between “switching”, “interference” and “integration”. However, the author questions the concept of intrasentential switching, which can not be applied to all of the discourses. This essay will then consider the theoretical aspects surrounding the subject, analyzing what can be considered universal and what can not in language code switching.