This book focuses on important methodological and theoretical issues in Chinese and Japanese L1 and L2 acquisition. All contributions discuss experiments using the Truth Value Judgment Task (TVJT), on three syntactic and semantic domains, binding, scope interaction, and wh- and logical expressions. The issues in these grammatical domains are particularly well suited for TVJT studies as the task allows for the testing of particular interpretations among alternative representations and reveals children’s and adults’ understandings of these constructions. The book is a tribute to Stephen Crain’s contribution to the field of Chinese and Japanese language acquisition within the framework of Generative Grammar. It is a state-of-the-art collection that offers a picture of research on children’s and adult’s Chinese and Japanese acquisition.