This book presents the original concept of the 'dispositif of age', combining post-Foucauldian analytics of the dispositif, discourse and governmentality with the historical semantics of Reinhart Koselleck to explore the functions of the notion of youth in the regulation of social life. Making use of examples from sources including scientific and media statements, youth policy programmes, and strategies at international (European) and local (Polish) levels, the author shows how this concept of youth supports processes of social regulation and contributes to the implementation of political goals as specific responses to issues such as radicalization and violence, unemployment, and economic crisis. This book will be of interest not only to scholars of discourse and youth studies, but also to all post-Foucauldian researchers with an interest in going beyond simple 'applicationism'.