Neofunctionalism is a theory of regional integration, building on the work of Ernst B. Haas, a German-born American political scientist, and also Leon Lindberg, an American political scientist. The explicit purpose of the neofunctionalists was to utilize the pioneering European experience of integration to generate hypotheses for testing in other contexts.Jean Monnet's approach to Europeanintegration, which aimed at integrating individual sectors in hopes of achieving spillover effects to further the process of integration, is said to have followed the neofunctional school's tack. Haas later declared the theory of neofunctionalism obsolete, a statement he revoked in his final book, after the process of European integration started stalling in the 1960s, when Charles de Gaulle's "empty chair" politics paralyzed the institutions of the European Coal and Steel Community, European Economic Community, and European Atomic Energy Community. The theory was updated and further specified namely by Wayne Sandholtz, Alec Stone Sweet, and their collaborators in the 1990s and in the 2000s (references below). The main contributions of these authors was an employment of empiricism.
Neofunctionalism describes and explains the process of regional integration with reference to how three causal factors interact:
Organizational capacity to resolve disputes and build international legal regimes
Supranational market rules that replace national regulatory regimes
Early neofunctionalist theory assumed a decline in importance of nationalism and the nation-state; it predicted that, gradually, elected officials, interest groups, and large commercial interests within states would see it in their interests to pursue welfarist objectives best satisfied by the political and market integration at a higher, supranational level. Haas theorized three mechanisms that he thought would drive the integration forward: positive spillover, the transfer of domestic allegiances and technocratic automaticity.
Positive spillover effect is the notion that integration between states in one economic sector will create strong incentives for integration in further sectors, in order to fully capture the perks of integration in the sector in which it started.
Increased number of transactions and intensity of negotiations then takes place hand in hand with increasing regional integration. This leads to a creation of institutions that work without reference to "local" governments.
The mechanism of a transfer in domestic allegiances can be best understood by first noting that an important assumption within neofunctionalist thinking is of a pluralistic society within the relevant nation states. Neofunctionalists claim that as the process of integration gathers pace, interest groups and associations will transfer their allegiances away from national institutions towards the supranational European institutions. They will do this because they will, in theory, come to realise that these newly formed institutions are a better conduit through which to pursue their material interests.
Greater regulatory complexity is then needed and other institutions on regional level are usually called for. This causes integration to be transferred to higher levels of decision-making processes.
Technocratic automaticity described the way in which, as integration proceeds, the supranational institutions set up to oversee that integration process will themselves take the lead in sponsoring further integration as they become more powerful and more autonomous of the member states. In the Haas-Schmitter model, size of unit, rate of transactions, pluralism, and elite complementarity are the background conditions on which the process of integration depends.
Just as Rosamond put it (Rosamond: Theories of European Integration), political integration will then become an "inevitable" side effect of integration in economic sectors.
Neofunctionalism was modified and updated in two important books that helped to revive the study of European integration: European Integration and Supranational Governance (1998), and The Institutionalization of Europe (2001). Wayne Sandholtz and Alec Stone Sweet describe and assess the evolution of Neofunctionalist theory and empirical research in their 2009 paper, Neo-functionalism and Supranational Governance.
Intergovernmentalism is an alternative theory of political integration, where power in international organizations is possessed by the member-states and decisions are made unanimously. Independent appointees of the governments or elected representatives have solely advisory or implementational functions. Intergovernmentalism is used by most international organizations today. An alternative method of decision-making in international organizations is supranationalism.
Intergovernmentalism is also a theory on European integration which rejects the Neofunctionalist mechanisms of integration. The theory, initially proposed by Stanley Hoffmann and refined by Andrew Moravcsik suggests that governments control the level and speed of European integration. Any increase in power at supranational level, he argues, results from a direct decision by governments who make decisions based on a domestic agenda. The theory rejects the spillover-effect argument and the idea that supranational organisations wield political influence on par with that of national governments.
Neofunctionalists have criticized intergovernmentalism on theoretical grounds as well as on the basis of empirical evidence, which they claim demonstrates that intergovernmentalism is incapable of explaining the dynamics and trajectory of European integration. Today, approaches with affinities to neofunctionalism dominate the study of European integration, and especially regarding the European Union's legal system, while research on intergovernmentalism is sparse.
In the last decades Haas' theory has been revived by several authors, who describe the neofunctionalist theoretical legacy left by him as able to speak directly to current EU studies and comparative regionalism, if it is seen as a dynamic theory that corresponds to established social scientiﬁc norms with disciplinary openness.
Ernst B Haas: The Uniting of Europe, Stanford 1958
Ben Rosamond: Theories of European Integration (Palgrave Macmillan: Hampshire, 2000)
Wayne Sandholtz and Alec Stone Sweet, eds., European Integration and Supranational Governance (Oxford University Press, 1998)
Alec Stone Sweet, Wayne Sandholtz, and Neil Fligstein, The Institutionalization of Europe (Oxford University Press, 2001)
Alec Stone Sweet, The Judicial Construction of Europe (Oxford University Press, 2004)
^ abRosamond, Ben (2005). "The uniting of Europe and the foundation of EU studies: Revisiting the neofunctionalism of Ernst B. Haas". Journal of European Public Policy12 (2): 243. doi:10.1080/13501760500043928.
^Haas, E.B. (2004) ‘Introduction: Institutionalism or constructivism?’, in The Uniting of Europe: Politics, Social and Economic Forces, 1950-1957, 3rd edn, Notre Dame: University of Notre Dame Press, p. iiii
^Ernst Haas, The Obsolescence of Regional Integration Theory (Berkeley: Institute of International Studies, University of California, Berkeley, 1975).