1. ^aDepartment of Political Science, Leiden University, Postbus 9555, Leiden 2300 RB, The Netherlands. E-mail: taalberts@fsw.leidenuni.nl
2. ^bDepartment of Political Science, University of Southern Denmark, Campusvej 55, Odense C 5000, Denmark. E-mail: rvm@sam.sdu.dk

Abstract

Constructivism is often identified as the legitimate occupant of the middle ground between rationalism and reflectivism that emerged from the Third Debate in international relations (IR) theory. Indeed, the rationalist–constructivist debate is already being framed as the next dominant debate with the IR community. This paper evaluates the bridge-building project as initiated by Alexander Wendt, and takes issue with the via media as proposed by the so-called conventional constructivists. It is claimed that the rationalist–constructivist debate has been limited to a discussion of ontology, which has brought about a contradiction between ontology and epistemology. Returning to the pressing epistemological issues that were put on the table by reflectivist scholars, this article refocuses the current debate by taking up the Kuhnian link between substance and science. It elaborates a view of science as a communal practice built on intersubjective conventions and argumentative procedures. This leads to an alternative conception of the middle ground as a communicative space.