This book is a collection of papers that explore the ways in which bilingual children cope with two language systems. The papers address issues in linguistics, psychology, and education bearing on the abilities that bilingual children use to understand language, to perform highly specialised operations with language, and to function in school settings. All of the papers provide detailed analysis about how specific problems are solved, how bilingualism influences those solutions, and how the social context affects the process. Finally, the implications of these findings for policy-setting and the development of bilingual education programmes are explored. This will be an important and useful volume at the forefront of topical research in an area which is exciting increasing interest among linguists and cognitive scientists.