The New Institutional Economics-Main Theories

The aim of this article is to show that the New Institutional Economics is an interdisciplinary stream combining economics, law, organization theory, political sciences, sociology, and anthropology. The main theories which are part of the New Institutional Economics are: Agency Theory, Property Rights Theory and Transaction Costs Theory. The basic assumptions of these theories are mentioned in this paper. This article is an introduction to the New Institutional Economics and its main theories. For this purpose, it presents a brief guide for those who are interested in the New Institutional Economics. Finally, the article is accompanied by a short review of examples of empirical studies connected with these theories.