The phenomenon of language contact, and how it affects the structure of languages, has been of great interest to linguists in recent years. This pioneering new study looks at how grammatical forms and structures evolve when speakers of two languages come into contact, and offers insight into the mechanism that induces people to transfer grammatical structures from one language to another. The book will be of great interest to all working in grammaticalization, language contact, and language change.

This major new work explores the development of creoles and other new languages, focusing on the conceptual and methodological issues they raise for genetic linguistics. Written by an internationally renowned linguist, the book surveys a wide range of examples of changes in the structure, function and vitality of languages, and suggests that similar ecologies have played the same kinds of roles in all cases of language evolution. The Ecology of Language Evolution will be welcomed by students and researchers in sociolinguistics, creolistics, theoretical linguistics and theories of evolution.

The ways in which young people use language provides fascinating insights into language practice and contact. Written by a team of key scholars in the field, this book describes and theorises 'male, in-group, street-aligned, youth language practice' in urban centres in Africa, exploring the creative use of language, and its function in peer sociality and contestation of social identities. The book contributes to theoretical debates surrounding multimodal language, language contact, standards and variation, and language change. It highlights that 'youth languages' are not to be confused with...