Modeling Deviations from Purchasing Power Parity (PPP)
The volatility of the exchange rate under floating rates can be interpreted in terms of approaches that allow for short term price rigidity as well as in terms of models that consider the magnification effect of new information. This paper combines the two approaches into a unified framework,where the degree to which prices are rigid is determined endogenously. It is shown that the variance of percentage deviations from ppp has an upper bound,and that the relationship between the variance of deviations from ppp and the aggregate variability is not monotonic. Allowing for a short-run Phillips curve with optimal indexation, it is also demonstrated that a higher price flexibility will reduce deviations from ppp and output volatility.
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Volume (Year): 25 (1984)
Issue (Month): 1 (February)
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- Nancy Peregrim Marion, 1982. "The Exchange-Rate Effects of Real Disturbances with Rational Expectations and Variable Terms of Trade," Canadian Journal of Economics, Canadian Economics Association, vol. 15(1), pages 104-18, February.
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- Logue, Dennis E & Willett, Thomas D, 1976. "A Note on the Relation between the Rate and Variability of Inflation," Economica, London School of Economics and Political Science, vol. 43(17), pages 151-58, May.
- Lawrence H. Officer, 1982. "The Purchasing-Power-Parity Theory of Gerrard de Malynes," History of Political Economy, Duke University Press, vol. 14(2), pages 256-259, Summer.
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