How did the biological, brain and behavioural structures underlying human language evolve? When, why and where did our ancestors become linguistic animals, and what has happened since? This book provides a clear, comprehensive but lively introduction to these interdisciplinary debates. Written in an approachable style, it cuts through the complex, sometimes contradictory and often obscure technical languages used in the different scientific disciplines involved in the study of linguistic evolution. Assuming no background knowledge in these disciplines, the book outlines the physical and neurological structures underlying language systems, and the limits of our knowledge concerning their evolution. Discussion questions and further reading lists encourage students to explore the primary literature further, and the final chapter demonstrates that while many questions still remain unanswered, there is a growing consensus as to how modern human languages have arisen as systems by the interplay of evolved structures and cultural transmission.

"This book reconstructs what the earliest grammars might have been and shows how they could have led to the languages of modern humankind. "Like other biological phenomena, language cannot be fully understood without reference to its evolution, whether proven or hypothesized," wrote Talmy Givon in 2002. As the languages spoken 8,000 years ago were typologically much the same as they are today and as no direct evidence exists for languages before then, evolutionary linguists are at a disadvantage compared to their counterparts in biology. Bernd Heine and Tania Kuteva seek to overcome this obstacle by combining grammaticalization theory, one of the main methods of historical linguistics, with work in animal communication and human evolution. The questions they address include: do the modern languages derive from one ancestral language or from more than one? What was the structure of language like when it first evolved? And how did the properties associated with modern human languages arise, in particular syntax and the recursive use of language structures? The authors proceed on the assumption that if language evolution is the result of language change then the reconstruction of the former can be explored by deploying the processes involved in the latter. Their measured arguments and crystal-clear exposition will appeal to all those interested in the evolution of language, from advanced undergraduates to linguists, cognitive scientists, human biologists, and archaeologists.