Nonlinear adjustment in PPP—evidence from threshold cointegration

Nonlinearity in PPP has been carefully reported in number of studies. However, asymmetry with respect to the sign of the deviation and the dependency of the asymmetry on the exchange rate regime has largely remained outside the scope of those studies. The present paper partly fills this gap. It applies threshold cointegration techniques to real exchange rate dynamics between two Nordic countries, Finland and Sweden. First, it examines whether the sign of the deviation from equilibrium has any impact on adjustment. Second, it estimates an asymmetric band-type threshold cointegration in PPP. The results supported asymmetric adjustment in PPP. The single, asymmetric threshold indicated stronger adjustment during the flexible exchange rate regime. The band-type asymmetric threshold cointegration suggested that adjustment towards PPP would be fastest within the estimated band, which was interpreted as evidence for the target zone exchange rate regime. Accordingly, the inference on adjustment is sensitive to the type of nonlinearity used.I am grateful to the editor and two anonymous referees for many helpful comments and suggestions.     

Current Accounts and Coordination of Wage Bargaining

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The euro–dollar exchange rate and equity flows

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Time-Varying Fundamentals of the Euro–Dollar Exchange Rate

Abstract

This study examines changes in the impact of the economic fundamentals on the euro–dollar exchange rate. First, the monetary model is augmented with the equity markets and the model is estimated in its structural form. Second, the time-varying impacts of the long-run fundamentals representing equilibrium in different markets on the euro–dollar exchange rate are examined using Kalman filtering. The time-varying structural model indicated that the relative importance of the different fundamentals was not equal and the impact of the fundamentals was time-dependent.