As a field of study, institutionalism originated in the beginning of the twentieth century. The original, «Old» institutionalism was based on the importance of path dependency, the autonomy of institutions, evolutionary economics. Moreover, it considered political and cultural factors of organisation, motivation and interaction and used a holistic approach to economics [1]. According to Gunnarsson, nowadays old institutionalists are considered advocates of mostly empirical and unrealistic research programme, posing no threat to neither classical nor neoclassical schools [2].
On the opposite, much of new institutionalism’s legitimacy is rooted in its reliance on neoclassical economic theory, because new institutionalism intents to relax some of the utility-based neoclassical model’s assumptions. The aim of new institutionalism is to combine the institutional analysis within a neoclassical economic framework so that institutional change would be considered as one of the important variables. Douglass North, one of the leading theoretician of the new institutionalism, highlights some questionable assumptions in the rational choice model that because of the incompleteness of information and largely unique situations lead to the development of behaviour patterns [3]. According to North, those patterns of behaviour are embodied in and guided by institutions.
By merging institutional analysis and rational based models, new institutionalism justifies the existence and role of such institutions with economic reasons. The main objective of institutions is seen as reducing transaction costs by setting the rules of action for all players. As for many other collective action theories, private property rights are the most important factor for new institutionalism that affects transaction costs, and establishment and enforcement of these rights are crucial in terms of costs of transaction and for securing longterm investment [4]. The importance of providing the rules for all players and the enforcement of these rules makes the state a crucial actor in the overall model.



