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Household Heterogeneity and the Real Exchange Rate: Still a Puzzle

Robert Kollmann

ECARES, Université Libre de Bruxelles; University of Paris XII - Department of Economics; Centre for Economic Policy Research (CEPR)

May 2009

CEPR Discussion Paper No. DP7301

Kocherlakota and Pistaferri (EJ, 2007) [KP] develop a model of a world economy with private-information Pareto optimal (PIPO) risk sharing; in that model, the real exchange rate tracks relative domestic/foreign cross-sectional distributions of consumption. KP claim that the PIPO model fits the UK/US real exchange rate well.
This paper shows that the PIPO model is inconsistent with the UK/US data. Minor specification changes overturn KP’s regression results. I also document that the relevant (relative) cross-sectional consumption moment is orders of magnitude more volatile than the real exchange rate, and less persistent. The link between the real exchange rage and consumption (heterogeneity) remains a puzzle.

Number of Pages in PDF File: 18

Keywords: heterogeneity, International risk sharing, real exchange rate

JEL Classification: F36, F41

Date posted: July 15, 2009  

Suggested Citation

Kollmann, Robert, Household Heterogeneity and the Real Exchange Rate: Still a Puzzle (May 2009). CEPR Discussion Paper No. DP7301. Available at SSRN: http://ssrn.com/abstract=1433896

Contact Information

Robert Kollmann (Contact Author)
ECARES, Université Libre de Bruxelles ( email )
Ave. Franklin D Roosevelt, 50 - C.P. 114
Brussels, B-1050
University of Paris XII - Department of Economics ( email )
61 avenue du General de Gaulle
Creteil cedex, 94010
HOME PAGE: http://www.robertkollmann.com
Centre for Economic Policy Research (CEPR)
77 Bastwick Street
London, EC1V 3PZ
United Kingdom
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