Modeling Deviations from Purchasing Power Parity (PPP) / Joshua Aizenman.

By:

Aizenman, Joshua

Contributor(s):

National Bureau of Economic Research

Material type: Text

TextSeries: Working Paper Series (National Bureau of Economic Research) ; no. w1066.Publication details: Cambridge, Mass. National Bureau of Economic Research 1983.Description: 1 online resource: illustrations (black and white)Subject(s):

F - International Economics

Online resources:

Available additional physical forms:

Hardcopy version available to institutional subscribers

Abstract: 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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Item type	Home library	Collection	Call number	Status	Date due	Barcode	Item holds
Working Paper	Biblioteca Digital	Colección NBER	nber w1066 (Browse shelf(Opens below))	Not For Loan

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1983.

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.