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- TESOL Quarterly: Research Issues Editor (1996-2009); reviewer
- Annual Review of Applied Linguistics: Editorial Director (2003-present)
- Canadian Modern Language Review:
- Member Editorial Team (1998-);
- Associate Editor (2003-07);
- Manuscript reviewer, judge for Best Graduate Student Award, best exchange-article with Modern Language Journal, etc.
- Modern Language Journal: Member of Editorial Board (1998-2007); reviewer
- International Journal of Applied Linguistics: Advisory Committee Member (2001-2003)
- English Teaching (Korea): Editorial Advisory Committee Member (2001-)
- TESL Canada Journal. Member of Editorial Advisory Committee (2002-present)
- Language Teaching. Member of Editorial Advisory Committee (2006-2010)
- Classroom Discourse. Member of Editorial Advisory Committee (2009-present)
- Chinese Language and Discourse. Member of Editorial Advisory Committee (2009-present)
- Language, Information, & Society, Journal of Sogang University, Seoul Korea (2010-present)
- Applied Linguistics: Member of Editorial Board (2004-17)
- Occasional reviewer (past or present) for additional journals: