多くの語学学習者が憧れる「高度運用能力」（Advanced Proficiency）はいかに到達できるか？Susan M. Gassや田口直子ら国際的に著名なSLA研究者多数が執筆した全28章にて、第二言語習得における高度運用能力についての最新の科学的研究成果を一冊で概観できる画期的レファレンス。New in paperback. Hardcover was published in 2018. Comprehensive in scope, this book provides an overview of advanced proficiency grounded in socially-relevant domains of second language acquisition including discourse, reading, genre-based writing, and pragmatic competence. The authoritative volume brings together the theoretical accounts of advanced language use combined with solid empirical research.