The Endogeneity of Optimum Currency Areas Criteria in the Context of Financial Crisis: Evidence from Time-Frequency Domain Analysis

The European integration process is theoretically supported by optimum currency area (OCA) theory which originates from debates about fixed versus flexible exchange rates, treating a common currency as the extreme case of a fixed exchange rate. The key issues of theoretical and empirical discussions in recent years are costs and benefits of adopting a common currency. We follow the hypothesis that historically greater integration provides more highly synchronized cycles. However, the commonly used methodological approaches overestimate cyclical co-movements between the time series during the financial crisis. Our contribution is in time series decomposition elimination trend included outliers appears in the years 2007-2010. Classification-JEL: F15, C14