Modeling of linguistic knowledge generally involves the compartmentalization of grammar into phonological, morphological, lexical, syntactic, semantic, and pragmatic components. These components are not isolated but interacting components. It is the resulting interfaces between grammatical components that forms the main topic of this volume, discussed from the perspective of bilingual L1 acquisition in early childhood and L2 in adulthood, as well as L1/L2 in late childhood. The book contains ten contributions by members of the Research Center on Multilingualism at the University of Hamburg...