This collection of seven studies evaluates the affect of various monetary policies and exchange rate arrangements on the economies of Argentina, Mexico and Brazil. They examine the role of currency board in Argentina, inflation targeting in Mexico and Brazil, international prudential regulation in reducing banking crisis, and credible commitment of the state in attracting FDI. There are also some theoretical and empirical studies on Mexico that evaluate the role of monetary policy in the economy, and analyze the determinants of bank disappearance.