This book examines the various ways in which age affects the process and the product of foreign language learning in a school setting. It presents studies that cover a wide range of topics, from phonetics to learning strategies. It will be of interest to students and researchers working in SLA research, language planning and language teaching.

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.

This work critically addresses the age debate in second language acquisition studies, presenting an in-depth study of factors that predict foreign accent. Quantitative and qualitative analyses confirm that cognitive, social, and psychological factors contribute to attainment, and that biological influences must therefore be considered alongside these essential aspects of learner experience.

This book takes a hard look at some of the assumptions that are customarily made concerning the role of age in second language acquisition. The evidence and arguments the contributors present run counter to the notion that an early start in second language learning is of itself either absolutely sufficient or necessary for the attainment of native-like mastery of a second language. Another theme of the book is a doubt that there is a particular stage of maturity beyond which language learning is no longer fully possible. In short, the book presents a challenge to those who take it as given that second language learning is inevitably different in its essential nature from language acquisition in the childhood years and that second language knowledge acquired beyond the critical period is in all circumstances and in all respects doomed to fossilize at a non-native-like level.

Second Language Acquisition and the Critical Period Hypothesis is the only book on the market to provide a diverse collection of perspectives, from experienced researchers, on the role of the Critical Period Hypothesis in second language acquisition. It is widely believed that age effects in both first and second language acquisition are developmental in nature, with native levels of attainment in both to be though possible only if learning began before the closure of a "window of opportunity" – a critical or sensitive period. These seven chapters explore this idea at length, with each contribution acting as an authoritative look at various domains of inquiry in second language acquisition, including syntax, morphology, phonetics/phonology, Universal Grammar, and neurofunctional factors. By presenting readers with an evenly-balanced take on the topic with viewpoints both for and against the Critical Period Hypothesis, this book is the ideal guide to understanding this critical body of research in SLA, for students and researchers in Applied Linguistics and Second Language Acquisition.

The authors examine the evidence relative to the idea that there is an age factor in first & second language acquisition & goes on to explore the various explanations that have been advanced to account for such evidence. Finally, it looks at educational ramifications of the age question.