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Is Mercosur an optimum currency area?
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Abstract
We find that generalized purchasing power parity does not hold for Mercosur, and thus that the South American trade group does not constitute an optimum currency area. We also find that the role of the United States cannot be neglected in the region, and that high short run volatility of real exchange rates is accompanied by slow adjustment processes of between 2 and 16 years (PPP puzzle).generalized purchasing power parity; optimum currency area; Mercosur; PPP puzzle