Time Varying Devaluation Risk, Interest Rate Differentials and Exchange Rates in Target Zones: Empirical Evidence from the EMS

Axel A Weber

No 611, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: Stylized empirical facts on the behaviour of exchange rates and interest rate differentials in target zone arrangements are at odds with the predictions of the simple (fully credible) target zone model. Incorporating time-varying devaluation risk in target zone models enriches the data-generating structures and provides an interesting interpretation of the variability - which standard target zone models leave unexplained. By using Bayesian time-varying parameter regression, the present paper shows that stochastic devaluation risk actually explains EMS data quite well. Three key findings should be stressed. First, estimates of expected devaluation rates have recently declined significantly, but devaluation risk has not yet been completely eliminated. Second, expected devaluation rates display `hysteresis'. This contaminates many of the relationships postulated by target zone models with noise, but adjusting for expected devaluation rates frequently reveals almost noise-free relationships, which strongly supports the predictions of the theory. Finally, the estimates of expected devaluation rates suggest that some of the early EMS realignments were largely anticipated by the market.

Keywords: Devaluation Risk; Exchange Rate; Interest Rate Differentials; Target Zone (search for similar items in EconPapers)
JEL-codes: F31 F33 (search for similar items in EconPapers)
Date: 1992-01
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Citations: View citations in EconPapers (4)

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