- 2021/04 - 現在 University of Michigan Mixed Methods Program Associate Member
- 2017/04 - 現在 Gakushuin Women's College Faculty of Intercultural Studies, Department of English Communication Associate Professor
- 2020/04 - 2021/03 University of Michigan Mixed Methods Program Senior Visiting Scholor
- 2014/04 - 2018/03 International Christian University / Institute for Educational Research and Service (IERS) Researcher
- 2013/09 - 2017/03 Keisen University, Department of English Communication, Associate Professor
- 2012/04 - 2013/08 Rikkyo University, Language Center, Full-time Lecturer
- 2007/04 - 2012/03 J. F. Oberlin University, English Language Program, Assistant Professor
- 2003/04 - 2007/03 J. F. Oberlin University, Foreign Language Education Center, Assistant Professor
- 1997/04 - 2003/03 Lecturer
- 1995/04 - 1997/03 Lecturer
- 1993/04 - 1995/03 Lecturer
- 1991/08 - 1992/03 Research Assistant
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THE JAPAN ASSOCIATION OF COLLEGE ENGLISH TEACHERS
, Society for Intercultural Education, Training and Research
, Mixed Methods International Research Association
, Japan Society for Mixed Methods Research