World-consistent equilibrium exchange rates

This paper proposes a systematic analysis of the problem of world consistency when deriving equilibrium exchange rates. World inconsistency can arise for two reasons. First, real effective misalignments of currencies out of the considered sample are implicitly assumed to be the mirror image of those of the currencies under review. Second, only N − 1 independent bilateral equilibrium exchange rates can be derived from a set of N effective rates. Here we measure the extent of these two problems by estimating equilibrium exchange rates for 15 countries of the G20 in effective as well as bilateral terms and by varying the assumptions concerning the rest of the world (RoW) and the numeraire currency. Our results show that the way the rest of the world is tackled has a major impact on the calculation of effective misalignments and especially bilateral misalignments.     

Systematic sampling and real exchange rates

Systematic Sampling and Real Exchange Rates. — Four major real bilateral exchange rates are shown to be well characterized by nonlinear stationary models over the recent float. Using Monte Carlo methods, this paper examines the effects of systematic sampling on the behaviour of real exchange rates and shows that: systematic sampling reduces significantly nonlinearity in real exchange rates and affects their lag structure; given a certain span, the frequency of the data set becomes crucial for detecting mean reversion in real exchange rates once the analysis is switched from a linear to a nonlinear model. Monte Carlo simulations also suggest that the parameter governing the speed of nonlinear mean reversion may be upward biased.     

Testing for non-linear dependence in inter-war exchange rates

Testing for Non-Linear Dependence in Inter-War Exchange Rates. — This paper tests weekly inter-war floating exchange rate data for the pound-dollar, pound-franc and pound-reichsmark for non-linearity. Initial tests reveal strong evidence of generic non-linearity in these series and indicate neglected non-linear structure in the residuals of linear representations. Attempts to model this structure using GARCH residual processes have only been partially successful. Thus, two parametric models of such non-linearity were estimated. Comparing the forecasts from these models shows the mean square forecast errors of linear-GARCH and bilinear models to be lower than those from linear forecasts for all series, and that SETAR model forecasts outperform all other models for the pound-dollar.     

A test of the news model of exchange rates

A Test of the News Model of Exchange Rates. — The news model is tested using quarterly data on six exchange rates involving four currencies over a period extending back to 1975. The results show that unbiased efficiency does not hold and that there are time-varying risk premia. The results also show that the news variables, proxied by the residuals of VAR models, do not have a significant effect on the exchange rate. It is argued that while news is a theoretically plausible explanation for erratic changes in the exchange rate, generated regressors cannot adequately represent news.     

The trend behavior of real exchange rates: Evidence from OECD countries

The Trend Behavior of Real Exchange Rates: Evidence from OECD Countries. — This paper examines the validity of purchasing power parity (PPP) under the current float using real effective exchange rates of eleven OECD countries. The author employs a test which allows for a one-time change in the intercept and/or in the slope of the trend function. The timing of the structural break is treated as unknown and is endogenously searched from the data. It is found that for a vast majority of countries, the real exchange rate can be characterized as a stationary process with a broken trend. The paper provides support for PPP in the long run.     

Misalignments of real exchange rates and the credibility of nominal currency bands

Misalignments of Real Exchange Rates and the Credibility of Nominal Currency Bands. — This paper analyzes a sticky-price target zone model in which realignment risk is modeled endogenously as a function of the degree of real exchange rate misalignments. The implications of the model are used to investigate the credibility of selected nominal ERM exchange rate bands. We find that a lack of credibility of the ERM currency bands occurs mostly in countries with substantial swings and persistent misalignments of real exchange rates. These findings suggest that the major real appreciations in some European bilateral real exchange rates between 1987 and 1992 have been pivotal in triggering the ERM currency crises of 1992 and 1993.     

Examining nonlinear dynamics of exchange rates and forecasting performance based on the exchange rate parity of four Asian economies

This paper employs smooth transition autoregressive (STAR) models to investigate the nonlinear dynamic behavior of exchange rate deviations based on the exchange rate parity (ERP) theory in four Asian economies: Japan, South Korea, Taiwan and Singapore. In this study, quarterly data from 1978 Q1 through 2007 Q4 are analyzed. The empirical results indicate that the deviations in the exchange rate of all four countries reject the null of linearity. The rate deviations in the Japanese and Korean cases exhibit a dynamic and smoothly symmetric ESTAR type process, while those in the Taiwanese and Singaporean cases match the smoothly asymmetric LSTAR type with respect to depreciating and appreciating regimes. These nonlinear characteristics can be explained by the existence of heterogeneous behavior and asymmetric information among economic agents. Furthermore, the estimation results of a nonlinear least squares (NLS) regression indicate that most of the parameter estimates are significant at the 10 percent level. The forecasted Japanese and Korean rate deviations in the ESTAR model are not superior to those from the AR model, possibly because these two countries experienced a serious fluctuation during the Asian financial crisis that occurred in 1997. However, based on the criterion of the RMSE, the forecasted Taiwanese and Singaporean rate deviations in the LSTAR model outperform those in the AR model.     

PURCHASING POWER PARITY IN AFRICAN COUNTRIES: EVIDENCE FROM PANEL SURADF TEST

This study reexamines the validity of long-run purchasing power parity (PPP) hypothesis using a battery of panel unit root tests for 11 developing countries in Africa over the period 1980-2007. Based on the conventional panel unit root tests, we found evidence that the monthly real exchange rates in these countries were mean reverting. By contrast, the series-specific unit root test proposed by Breuer et al. (SURADF) reveals that only six of the 11 RERs series were stationary using the US dollar as reference currency. Additionally, our results reveal that there is stronger evidence of the parity condition with the Rand-based rates than in the other currency-based rates like the US dollar or Euro. We conclude that PPP holds in some, but not all, of the African countries according to the SURADF tests.     

Sign predictions of exchange rate changes: Charts as proxies for Bayesian inferences

Sign Predictions of Exchange Rate Changes: Charts as Proxies for Bayesian Inferences. - One recurrent and controversial feature of high-frequency exchange rate returns is the apparent profitability of simple chartist rules. This paper attests the relevance of these rules for predicting the upward and downward tendencies in speculative prices. First, it is shown by means of a variant to the standard Markov switching model that there are swings in the mean for various weekly exchange rate returns. The paper proceeds by showing that certain chartist rules detect these regime shifts quite accurately. As such, these rules can be interpreted as workable proxies for the Bayesian filtering rule of Hamilton.     

A re-examination of the forward exchange rate unbiasedness hypothesis

A Re-Examination of the Forward Exchange Rate Unbiasedness Hypothesis. — This paper applies the Phillips and Hansen estimation and inference procedures to re-examine the hypothesis that the forward exchange rate is an unbiased predictor of the future spot exchange rate. The results indicate that the 90-day forward exchange rate is not an unbiased predictor. However, the 90-day forward and future spot exchange rates are cointegrated. Only for the U.K. pound/U.S. dollar exchange rate is there an error correction representation. Overall, however, the evidence is consistent with the hypothesis that risk-averse agents in the forward foreign exchange market form expectations rationally.     

A fractional cointegration approach to empirical tests of PPP: New evidence and methodological implications from an application to the Taiwan/US dollar relationship

A Fractional Cointegration Approach to Empirical Tests of PPP: New Evidence and Methodological Implications from an Application to the Taiwan/ US Dollar Relationship. —This paper applies a relatively new concept of fractional cointegration to shed some light on the validity of purchasing power parity as a long-run equilibrium condition, using the Taiwan/US dollar exchange rate. Findings suggest that, while standard tests of cointegration fail to support cointegration between nominal exchange rates, domestic and foreign prices, the fractional cointegration analysis permits deviations from equilibrium to follow a fractionally integrated process and hence captures a much wider class of parity or mean-reversion behaviour. The paper concludes by indicating areas in which fractional cointegration will be a particularly appropriate technique to unearth previously unfounded temporal characteristics.     

Pitfalls in panel tests of purchasing power parity

Pitfalls in Panel Tests of Purchasing Power Parity. —The results of panel unit root tests applied to real exchange rates as a test of long-run purchasing power parity (PPP) diverge much. In particular, due to misspecifications there is little evidence of the convergence of real exchange rates for the German mark. This paper provides evidence of this issue by analyzing large panels of real exchange rates vis-à-vis the German mark and the dollar. In particular, the impact of the base country and various aspects of the dynamic specifications are analyzed. Overall, the results provide strong evidence in favour of PPP as a long-run relationship.     

State-space estimation of rational bubbles in the Yen/Deutsche Mark exchange rate

State-Space Estimation of Rational Bubbles in the Yen/Deutsche Mark Exchange Rate. — This paper considers a series that uncovered interest parity predicts to be white noise and inspects it for evidence of stochastic rational bubbles. State-space methods are used that specify a bubble component of the series as an unobserved state. The technique’s effectiveness is demonstrated by Monte Carlo experiments. One span of the series is found in which a stochastic rational bubble specification clearly dominates the white noise specification. It coincides with a period of general financial turm-oil in the associated economies, i.e. Japan and Germany during 1989 and early 1990.     

The monetary exchange rate model in the long run: An empirical investigation

The Monetary Exchange Rate Model in the Long Run: An Empirical Investigation. — This paper uses the Johansen multivariate cointegration method to examine three variants of the monetary approach to the long-run exchange rate model: flexible price, forward-looking and sticky price monetary models. Evidence is provided for four bilateral sterling exchange rates. The sensitivity of the results to the measurement of monetary aggregates is also examined. The cointegration results provide dismal evidence for the flexible price and forward-looking models irrespective of the measurement of money. The findings are more mixed for the sticky price model, particularly when broad money is used.     

Simple credibility tests of the ERM bands for the pound sterling and the Italian lira

This article presents evidence that the European Monetary System (EMS) bands for the Italian lira and the pound sterling were not credible for most of the period 1990–1992, and especially during the week prior to their withdrawal from the EMS system. Using a simple test, developed by Svensson, domestic interest rates for both Italy and the United Kingdom have been found to be mostly outside the rate-of-return bands implied by the official arrangements of the EMS target zone system. Furthermore, comparing implied forward rates for various maturities with the official EMS bands of both currencies, we again found that the followed monetary policies in both countries were not in general consistent with those needed to maintain an orderly functioning of the (EMS) system. The Svensson test can further be used as an indicator of potential speculative attacks on an EMS currency, and, in turn, as a signal of an emerging need to adjust the corresponding country's monetary policy.     

Capital controls and international trade finance in a dual exchange rate regime: The Belgian experience post-mortem

Capital Controls and International Trade Finance in a Dual Exchange Rate Regime: The Belgian Experience Post-Mortem. — The purpose of the paper is to model “leads and lags” capital flows on the official segment of a dual exchange market and to examine the effects of various types of capital controls imposed by authorities on the official spot and forward exchange markets. The focus of the analysis is the degree of insulation provided by a “dual exchange market cum capital controls” in face of a speculative crisis. The crucial variables in this respect are the deviation from covered interest parity and the forward risk premium. Results of the theoretical model are confronted with empirical evidence over the 1975–85 period.     

Multinational companies and wage inequality in the host country: The case of Ireland

Multinational Companies and Wage Inequality in the Host Country: The Case of Ireland. — In this paper, the authors analyze the impact of multinational companies on wage inequality in a host country. Based on a model, in which the introduction of new technologies leads to increases in the demand for skilled labour and, therefore, to rising wage inequality, they econometrically study the Irish manufacturing sector between 1979 and 1995. They examine inequality between wages for skilled and unskilled labour within the same manufacturing sector. Their results indicate that there is an inverted-U relationship between wage inequality and multinationals, i.e., with the increasing presence of multinationals, wage inequality first increases, reaches a maximum, and decreases eventually.     

Exchange rate uncertainty and the efficiency of the forward market for foreign exchange

Exchange Rate Uncertainty and the Efficiency of the Forward Market for Foreign Exchange. — The paper investigates to what extent exchange rate uncertainty can account for the observed deviations from the forward market efficiency hypothesis (FMEH). The empirical analysis employs a simple varying parameter regression to allow uncertainty to modify the central parameters of the FMEH in a direct way. Uncertainty is proxied by significant exchange rate changes. The results indicate that there is considerable support for the FMEH if one allows the intercept term to vary over time.     

Export variety and export performance: Empirical evidence for the OECD countries

Export Variety and Export Performance: Empirical Evidence for the OECD Countries. — Does product variety matter for export performance? This has been suggested by the new trade theory. In the present paper, we investigate empirically whether increasing export variety has contributed to the export growth of the OECD countries. We calculate direct measures of export variety and estimate pooled export demand equations for 15 OECD countries. The econometric results suggest that producing highly differentiated export goods gives a competitive advantage which allows to sell more products.