• Member of editorial board, Bilingualism: Language and Cognition
• Member of editorial board, Second Language Research
• Member of editorial board, International Journal of Bilingualism
• Member of editorial board, Multilingual Education
• Panel member, European Research Council, panel on “The Human Mind and itsComplexity: Cognitive Science, Psychology, Linguistics and Education”
• Reviewer, National Institutes of Health (NIH), National Science Foundation (NSF)
• Reviewer, Social Sciences and Humanities Research Council of Canada (SSHRC)
• Assessor, Australian Research Council
• Life member, Linguistic Society of America (LSA)
• Life member, International Association for Chinese Linguistics (IACL)
• Life member, Linguistic Society of Hong Kong (LSHK)