This volume has brought together research from both 'cognitive' and 'functional' approaches to linguistics. The collection includes work from cognitive science disciplines whose concerns overlap with linguistics, such as artificial intelligence, neurolinguistics and psychology. Despite their diversity, the papers in this volume are all inspired by the same fundamental question: to what extent is the structure of languages affected by human cognitive structures and language use? This book will appeal to graduate students, professors, and researchers - in particular, cognitive and functional linguists; psychologists; and artificial intelligence scholars.