Carmel O'Shannessy has a chapter in a newly published De Gruyter book: Code-switching Between Structural and Sociolinguistic Perspectives. In this chapter, Carmel continues to explore Light Warlpiri, the new mixed language whose birth and development she has been documenting over the past few decades. She shows how the development of mixed languages follow from the complex interaction between many factors, both linguistic and social. The full bibliographic information of Carmel's paper, including an abstract, is given below.

O'Shannessy, Carmel. (2015)  Typological and social factors influencing a new mixed language, Light Warlpiri. In Code-Switching: Between Structural and Sociolinguistic Perspectives, eds. Gerald Stell & Kofi Yakpo.  Walter de Gruyter.

Analysis of a recently emerged mixed language in northern Australia, Light Warlpiri, shows how both typological and social factors influence the structure of the resulting language. The new code also echoes the structures of the code-switching patterns which preceded it, and consequently many structures of the source languages are reproduced in the mixed language with little or no change. However, the new code shows radical innovations in the verbal system, yet these can be traced to influences from Warlpiri grammatical and semantic structure, in concert with English/Kriol forms. The influence of Warlpiri is also seen in less obvious ways, for instance in how the speakers process word order and ergative case marking when listening to transitive sentences, and in the elements of Warlpiri verbal structure which are retained in Light Warlpiri. Social factors play an important role in the formation of Light Warlpiri and what it now symbolizes for its speakers. Historical events, social interactions with speakers of other languages, and pressure to shift to English have each influenced the development of the new mixed language.