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This study investigates the effects of terms of trade shocks and international reserves on the real effective exchange rate. For this purpose is used panel data technique and data related to 20 countries for 1980- 2008 period. Estimation results show that international reserves have buffer effect in terms of trade shocks and cause terms of trade shocks have less effect on real exchange rate. Of course this result confirms in developing countries, but don’t confirm in developed countries. In addition according to results, reserve effect in reduction terms of trade shocks effect in oil exporting countries is more than other countries. Also, according to estimations in this study, increase in financial development reduces buffer role of international reserves.

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Macroeconomic performance has improved in many countries in the world in the last fifteen years or so. Much of the literature has concentrated on how central bank independence, inflation targeting regimes, and currency :::union:::s have contributed to improving the effectiveness of monetary policy and hence macroeconomic performance. Since the financial system is a key component of the monetary transmission mechanism, we study how a country’s financial development affects monetary policy efficiency in 28 developed and developing countries within 1995-2006. Specifically, our objective is to derive monetary policy efficiency measures (PEMs) - derivative from Krause and Rioja- for 28 Developed and developing countries and analyze the impact that the size and depth of the banking sector and the capital sector have on policy performance. In our empirical analysis we use three financial development measures: private credit, liquid liabilities, and a financial aggregate index that comprises banking and stock market measures. The Results of model estimation with generalized method of moments (GMM) technique, shows that financial development with mentioned indicators has a positive and significant effect on monetary policy efficiency. Also supervision in central bank independency and inflation targeting regimes -as control variables- has positive and significant effect on monetary policy efficiency. This result doesn’t make a difference whether the country is developed or developing and in the both of them more developed financial markets, controlling the central bank independency and applying inflation targeting regimes, significantly help to achieve a more efficient monetary policy.