Same menu,seperate tables: The institutionalist turn in political science and the study of European integration

Abstract Recent research on European integration has largely profited from the institutionalist turn in political science. Theoretical progress has, however, been hampered by the diverse understandings of this new research tradition. This paper tries to tackle the conceptual diversity in a positive way. We first analyze the neo–institutionalist turn in political science and European studies and then move on to a detailed analysis and comparison of the three competing approaches — sociological, historical, and rational choice institutionalism. Next, we will show that the main differences are as much epistemological as theoretical. A convergence towards a unifying institutionalist approach can thus only be possible if some sort of a methodological convergence takes place. We sketch how a synthesis between the competing schools might appear.