durch soziale Umstände der Migrationsgesellschaft (mit-)bestimmt werden.The studies in this book presented in German and English contribute to answering the question of the extent to which Turkish can continue to be viewed as a ‘very alive language’ in Germany and what special features the bilingual acquisition processes are subject to. The results should be viewed as pieces of a very large puzzle, which include individual areas of acquisition (such as morphology) as well as the use of Turkish – especially by adolescents.The studies therefore contribute to the knowledge that German-Turkish bilingualism in the multilingual context has its peculiarities that cannot be measured against a monolingual norm, but rather have their origin in a specific bilingual processing of knowledge and are influenced by the social circumstances of the migration society.