This contribution develops a theory on the impact of differentiation on integration and unity among EU member states and discusses empirical evidence from four policy areas. According to the theory, the centripetal effects of closer cooperation among willing EU members on initially unwilling...

Around the world many countries are about to break apart, stay together, join in federations or build supranational organisations. The political debate of the European constitution is embedded in this context. The question arises which policies have to be shifted to the central European level...

This paper assesses the impact of market power and multinationality in EU12 manufacturing industries on EU integration in goods trade in the 90ies. An increase in the market concentration exhibits a positive impact on bilateral exports, while an increase in multinationality works in the opposite...

Globalization and European integration are substantially changing the interregional division of labor in Europe and the industrial specialization of European regions, thereby potentially affecting the extent of disparities between countries and regions. This paper reviews several theoretical...

This paper challenges the assertion that European politics would be closer to the citizens' preferences if decision power were transferred from the Council of Ministers to the European Parliament. On the one hand, citizens benefit from a greater transparency in the Parliament's debates compared...