Nominal exchange rate volatility has been greater than that of "fundamentals" supposed to establish the exchange rates. A major contribution to our understanding of this volatility was given by Rudiger Dornbusch in his 1976 paper "Expectations and Exchange Rate Dynamics", where stickiness of...

The absolute deterministic version of purchasing power parity (PPP), in which nominal exchange rates move precisely to offset changes in aggregate price levels between national economies, is not generally supported by empirical evidence. Testing PPP with standard regression models permits some...