Reysen and Katzarska-Miller capture in this volume the essence of the emerging superordinate identity of global citizenship, and articulate the conceptual and empirical challenge it entails. They expertly and clearly integrate in a theoretical framework the growing literature on the subject from various disciplinary perspectives such as psychology, business, education, and political science. This volume is a timely and groundbreaking work for a world trying to deal with challenges of increasing globalization and interdependence. It will spur further research and refinement of theory with practical implications in areas such a sustainable behavior, economics, marketing, social responsibility, identity development and politics. Must read for current and aspiring social and behavior scientists around the globe. -- Aghop Der-Karabetian, University of La Verne