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Ambiguity Aversion: Implications for the Uncovered Interest Rate Parity Puzzle

  • Cosmin Ilut

High interest rate currencies tend to appreciate in the future relative to low interest rate currencies instead of depreciating as uncovered interest parity (UIP) predicts. I construct a model of exchange rate determination in which ambiguity-averse agents face a dynamic filtering problem featuring signals of uncertain precision. Solving a max-min problem, agents act upon a worst-case signal precision and systematically underestimate the hidden state that controls payoffs. Thus, on average, agents next periods perceive positive innovations, which generates an upward re-evaluation of the strategy's profitability and implies ex post departures from UIP. The model also produces predictable expectational errors, negative skewness, and time-series momentum for currency speculation payoffs. (JEL D81, F31, G15)

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Article provided by American Economic Association in its journal American Economic Journal: Macroeconomics.

Volume (Year): 4 (2012)
Issue (Month): 3 (July)
Pages: 33-65

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Handle: RePEc:aea:aejmac:v:4:y:2012:i:3:p:33-65
Note: DOI: 10.1257/mac.4.3.33
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  1. Emmanuel Farhi & Xavier Gabaix, 2008. "Rare Disasters and Exchange Rates," NBER Working Papers 13805, National Bureau of Economic Research, Inc.
  2. Adrien Verdelhan, 2006. "A Habit-Based Explanation of the Exchange Rate Risk Premium," Computing in Economics and Finance 2006 217, Society for Computational Economics.
  3. Larry Epstein & Martin Schneider, 2002. "Learning Under Ambiguity," RCER Working Papers 497, University of Rochester - Center for Economic Research (RCER), revised Mar 2005.
  4. Nicolas Vincent & Isaac Kleshchelski, 2008. "Robust Equilibrium Yield Curves," 2008 Meeting Papers 486, Society for Economic Dynamics.
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  8. Almuth Scholl & Harald Uhlig, 2006. "New Evidence on the Puzzles: Monetary Policy and Exchange Rates," Computing in Economics and Finance 2006 5, Society for Computational Economics.
  9. Bacchetta, Philippe & Mertens, Elmar & van Wincoop, Eric, 2006. "Predictability in Financial Markets: What Do Survey Expectations Tell Us?," CEPR Discussion Papers 5770, C.E.P.R. Discussion Papers.
  10. George W. Evans & Avik Chakraborty, 2006. "Can Perpetual Learning Explain the Forward Premium Puzzle?," University of Oregon Economics Department Working Papers 2006-8, University of Oregon Economics Department, revised 20 Aug 2006.
  11. Adrien Verdelhan & Hanno Lustig, 2005. "The Cross-Section Of Foreign Currency Risk Premia And Consumption Growth Risk," Boston University - Department of Economics - Working Papers Series WP2005-019, Boston University - Department of Economics.
  12. Xavier Gabaix, 2012. "Variable Rare Disasters: An Exactly Solved Framework for Ten Puzzles in Macro-Finance," The Quarterly Journal of Economics, Oxford University Press, vol. 127(2), pages 645-700.
  13. Francois Gourio, 2008. "Disasters and Recoveries," American Economic Review, American Economic Association, vol. 98(2), pages 68-73, May.
  14. Kaminsky, Graciela, 1993. "Is There a Peso Problem? Evidence from the Dollar/Pound Exchange Rate, 1976-1987," American Economic Review, American Economic Association, vol. 83(3), pages 450-72, June.
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