عنوان مقاله [English]
According to institutional economists two levels of institutions affect economic performance. The first level involves macroeconomic institutions that affect the government and other powerful players, and the second level involves micro institutions which facilitate business environment by reducing transaction costs, Therefore in this study, different institutional levels’effect and their interactions on Southwest Asian countries’ economic growth and OECD during (2007-2014) was analyzed in the form of panel data dynamic with a GMM system approach. The results show that improves in both micro and macro institutional levels has positive effect on both groups of countries. Besides the impact of both institutional levels, especially the macro level, on economic growth in OECD countries is higher than South West Asian countries.So by analyzing the long-term relationship between institutional indices and their causality direction based on Johansson's co integration method and error correction models, the interactions of micro and macro institutions were investigated. The results show that in OECD countries, causality and long run relation is from macro institutions toward micro institutions which is due to institutional theory, but in South West Asian countries the causality and lung run relation is not significant between micro and macro institutions. Due to the results in OECD countries, macro institutions by creating requirements for the government and main players provide the need for institutional reforms at the micro institutional level but in south west Asian countries, the macro institutional environment does not create such a requirement for the reform of the micro institutions.