The origins of sound change is one of the oldest and most challenging questions in the study of language. The goal of this volume is to examine current approaches to sound change from a variety of theoretical and methodological perspectives, including articulatory variation and modeling, speech perception mechanisms and neurobiological processes, geographical and social variation, and diachronic phonology. This diversity of perspectives contributes to a fruitful cross-fertilization across disciplines and represents an attempt to formulate converging ideas on the factors that lead to sound change. This book is addressed to scholars in historical linguistics, linguistic typology, and phonology as well as to researchers in speech production and perception, cognition and modeling. Given the theoretical and methodological interest of the contributions as well as the novel instrumental techniques applied to the study of sound change, this volume will interest professionals teaching language typology, laboratory phonology, sound change, phonetics and phonological theory at the graduate level.