Yun Xiao is Associate Professor and Chair of the Department of Modern Languages at Bryant University. Her research interests are second language acquisition and pedagogy, heritage language learning, and Chinese syntax and discourse. Her publications include more than twenty journal articles and book chapters, a four-volume Readings in Chinese Literature Series, and two co-authored/edited research volumes: Chinese as a Heritage Language: Fostering Rooted World Citizenry and Teaching Chinese as a Foreign Language: Theories and Applications. Liang Tao is Associate Professor of Linguistics at Ohio University. Her research focuses on the explanation of language, such as the patterns of linguistic structure in language usage and language development, and the impact of this usage on human cognitive processes of language. Her studies have always been grounded in both empirical studies of discourse analyses and experimental studies of language processes. She has published encyclopedia entries and numerous articles in edited volumes and journals. Hooi Ling Soh is Associate Professor of Linguistics and a faculty affiliate member of the Center for Cognitive Sciences at the University of Minnesota. Her research, which has received support from the Chiang Ching-Kuo Foundation, the Pacific Cultural Foundation, the Graduate School and the College of Liberal Arts of the University of Minnesota, focuses on syntax and the interaction between syntax and other components of grammar. Her work has appeared in Natural Language and Linguistic Theory, Linguistic Inquiry, Journal of East Asian Linguistics, and Oceanic Linguistics, as well as in book volumes published by Mouton de Gruyter, John Benjamins and Springer.