This volume connects the latest research on language acquisition across the lifespan with the explanation of language change in specific sociohistorical settings. This conversation benefits from recent advances in two areas: on the one hand, the study of how learners of various ages and in various sociolinguistic contexts acquire language variation; on the other, historical sociolinguistics as the field that focuses on the study of historical patterns of language variation and change. The overarching rationale for this interdisciplinary dialogue is that all forms of language change start and spread as the result of individual acts of acquisition throughout the speakers’ lives. The thirteen chapters in this book are authored by an international group of both established and emerging scholars. They encompass theoretical overviews of specific research areas within the broader realm of the acquisition of language variation, as well as case studies applying these theoretical advances to the exploration of language change in a wide range of sociohistorical contexts in the Americas, Oceania, and Asia. This volume will be of interest to students and researchers in the area of language acquisition, language variation and language change, especially those working on interdisciplinary and crosslinguistic connections among these areas.

This volume provides a broad coverage of the intersection of sociolinguistic variation and language acquisition. Favoured by the current scientific context where interdisciplinarity is particularly encouraged, the chapters bring to light the complementarity between the social and cognitive approaches to language acquisition. The book integrates sociolinguistic and psycholinguistic issues by bringing together scholars who have been developing conceptions of language acquisition across the lifespan that take into account language-internal and cross-linguistic variation in contexts of both first and second language acquisition as well as of first and second dialect acquisition. The volume brings together theoretical and empirical research and provides an excellent basis for scholars and students wanting to delve into the social and cognitive dimensions of both the production and perception of sociolinguistic variation. The book enables the reader to understand, on the one hand, how variation is acquired in childhood or at a later stage and, on the other, how perception and production feed into one another, thus building up our understanding of the social meanings underpinning language variation.

Language Development Over the Lifespan is a reference resource for those conducting research on language development and the aging process, and a supplementary textbook for courses in applied linguistics/bilingualism programs that focus on language attrition/aging and adult literacy development in second languages. It offers an integrative approach to language development that examines changes in language over a lifetime, organized by different theoretical perspectives, which are presented by well-known international scholars.

Under which circumstances does grammatical change come about? Is the child the principle agent of change as suggested by historical linguistics?This book discusses diachronic change of languages in terms of restructuring of speakers' internal grammatical knowledge. Efforts to construct a theory of diachronic change consistent with findings from psycholinguistics are scarce. Here, these questions are therefore addressed against the background of insights from research on monolingual and bilingual acquisition. Given that children are remarkably successful in reconstructing the grammars of their ambient languages, commonly held views need to be reconsidered according to which language change is primarily triggered by structural ambiguity in the input and in settings of language contact. In an innovative take on this matter, the authors argue that morphosyntactic change in core areas of grammar, especially where parameters of Universal Grammar are concerned, typically happens in settings involving second language acquisition. The children acting as agents of restructuring are either L2 learners themselves or are continuously exposed to the speech of L2 speakers of their target languages. Based on a variety of case studies, this discussion sheds new light on phenomena of change which have occupied historical linguists since the 19th century and will be welcomed by advanced undergraduate and graduate students as well as researchers in the fields of historical linguistics and language acquisition.

This book pioneers the study of bilingualism across the lifespan and in all its diverse forms. In framing the newest research within a lifespan perspective, the editors highlight the importance of considering an individual's age in researching how bilingualism affects language acquisition and cognitive development. A key theme is the variability among bilinguals, which may be due to a host of individual and sociocultural factors, including the degree to which bilingualism is valued within a particular context.Thus, this book is a call for language researchers, psychologists, and educators to pursue a better understanding of bilingualism in our increasingly global society.

Bilingualism Across the Lifespan examines the dynamics of bilingual language processing over time from the perspectives of neurolinguistics, psycholinguistics and sociolinguistics. This multidisciplinary approach is fundamental to an understanding of how the bilingual's two (or more) language systems interact with each other and with other higher cognitive systems, neurological substrates, and social systems - a central theme of this volume. Contributors examine the nature of bilingualism during various phases of the lifecycle - childhood, adulthood, and old age - and in various health/pathology conditions. Topics range from code separation in the young bilingual child, across various types of language pathologies in adult bilinguals, to language choice problems in dementia. The volume thus offers a broad overview of current theoretical and empirical approaches to the study of bilingualism. It will interest and stimulate researchers and graduate students in the fields of linguistics, neuropsychology, and developmental psychology, as well as in foreign language teaching, speech pathology, educational psychology, and special education.

Language Development: The lifespan perspective generates insights into the central issues of age-dependent language change, focusing especially on the middle and later stages of life. The contributors exploit contemporary and historical longitudinal data, adopting psycholinguistic, corpus linguistic and sociolinguistic approaches. Linguistic changes are discussed against the background of cognitive, somatic and social factors. Bringing the resulting contributions together, the volume aims to resume the discussion of contradictions between the models of change and constancy over an individual’s lifespan that have not been sufficiently resolved to date. The volume is intended to serve as an interdisciplinary reference resource for those conducting research on language development and the aging process and as a supplementary course book on language variability and change.