Search Results
Working Paper
Aggregation and the PPP puzzle in a sticky-price model
We study the purchasing power parity (PPP) puzzle in a multi-sector, two-country, sticky- price model. Across sectors, firms differ in the extent of price stickiness, in accordance with recent microeconomic evidence on price setting in various countries. Combined with local currency pricing, this leads sectoral real exchange rates to have heterogeneous dynamics. We show analytically that in this economy, deviations of the real exchange rate from PPP are more volatile and persistent than in a counterfactual one-sector world economy that features the same average frequency of price changes, and ...
Working Paper
Deviations from purchasing power parity: causes and welfare costs
We explore deviations from short-run purchasing power parity across European cities, attempting to move beyond a "first-generation" of papers that document very large border effects. We document two very distinct types of border effects embedded in relative prices. The first is a "real barriers effect," caused by various barriers to market integration. The second is a sticky-consumer-price cum volatile exchange-rate effect. Both are shown to be important empirically, the second type especially so. We argue that the two effects are very different from each other. For the first type of ...
Working Paper
Violating purchasing power parity.
This paper demonstrates that deviations from the law of one price are an important source of violations of absolute PPP across countries. Using highly disaggregated U.S. export data, we document evidence of systematic international price discrimination based on the local wage of consumers in the destination market. We show that most violations from absolute PPP can also be explained by international differences in wages. We find very little additional explanation is due to differences in income per capita. Developing and calibrating a model of pricing-to-market based on search frictions and ...
Working Paper
Quantifying the half-life of deviations from PPP: The role of economic priors
The half-life of deviations from purchasing power parity (PPP) plays a central role in the ongoing debate about the ability of macroeconomic models to account for the time series behavior of the real exchange rate. The main contribution of this paper is a general framework in which alternative priors for the half-life of deviations from PPP can be examined. We show how to incorporate formally the prior views of economists about the half-life. In our empirical analysis we provide two examples of such priors. One example is a consensus prior consistent with widely held views among economists ...
Journal Article
Burgernomics: a big MacT guide to purchasing power parity
The theory of purchasing power parity (PPP) has long been a staple of international economic analysis. Recent years have seen the rise in popularity of a tongue-in-cheek, fast-food version of PPP: The Big Mac? index. In this article, Michael Pakko and Patricia Pollard describe how comparisons of Big Mac prices around the world contain the ingredients necessary to demonstrate the fundamental principles of PPP. They show that the Big Mac index does nearly as well as more comprehensive measures of international price comparisons and that deviations from ?McParity? illustrate why PPP often ...
Journal Article
$ Canadian: an exception
Journal Article
Bullionists' exchange rate doctrines and current policy debates
An abstract for this article is not available
Journal Article
Understanding trends in foreign exchange rates
Journal Article
Britain's borrowed time