Yukio Tono is a professor at the Graduate School of Global Studies and Director of the World Language Center at the Tokyo University of Foreign Studies, Japan. He received his PhD in corpus linguistics from Lancaster University. His research interests include the pedagogical application of corpora in foreign language teaching and learning, second language learner profiling based on the CEFR, and the development of CEFR-related resources. He has also served as a member of the revision committee for the new Course of Study for MEXT. Currently, he is the principal investigator of the CEFR-J and CEFR-J x 28 projects.