This book showcases recent developments in the field of Japanese applied linguistics. It covers a wide range of current issues and influential theoretical and methodological frameworks, many of which are of concern not only for Japanese specialists but also applied linguists in general. At the same time, the book provides empirical studies that exemplify how these issues and frameworks manifest themselves in contexts that surround first and second language speakers of Japanese. The book is divided into four sections. The first examines language in action, providing a close analysis of language as it is used in interactions between speakers. The second section looks at sociological diversity in Japanese speakers, considering factors such as gender, age, or background. Section three explores how globalization has affected Japanese language use and acquisition. The final section reflects on classroom teaching of Japanese language and culture. This comprehensive, in-depth study will be useful for researchers and graduate students in both applied linguistics and Japanese linguistics.