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Robust Control, Informational Frictions, and International Consumption Correlations

  • Yulei Luo

    (The University of Hong Kong and Hong Kong Institute for Monetary Research)

  • Jun Nie

    (Federal Reserve Bank of Kansas City)

  • Eric R. Young

    (University of Virginia)

In this paper we examine the effects of model misspecification (robustness or RB) on international consumption correlations in two otherwise standard small open economy models: one with perfect state observation and the other with imperfect state observation. We show that in the presence of capital mobility in financial markets, RB lowers the international consumption correlations by generating heterogeneous responses of consumption to income shocks across countries facing different macroeconomic uncertainty. However, the calibrated RB model with perfect state observation cannot explain the observed consumption correlations quantitatively. We then show that the RB model with imperfect state observation is capable of matching the behavior of international consumption quantitatively via two channels: (i) the gradual response to income shocks that increases the correlations and (ii) the presence of the common noise shocks that reduce the correlations.

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Paper provided by Hong Kong Institute for Monetary Research in its series Working Papers with number 212013.

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Length: 40 pages
Date of creation: Nov 2013
Date of revision:
Handle: RePEc:hkm:wpaper:212013
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