PURCHASING POWER PARITY WITH RANK TESTS FOR NONLINEAR COINTEGRATION IN AFRICAN COUNTRIES

This study applies nonlinear cointegration to assess exchange rates with the corresponding relative prices and aggregate price levels for 20 African countries. We find that a nonparametric rank test has higher power than parametric testing procedures; a true data‐generating process of exchange rate is in fact a stationary nonlinear process. We examine the validity of purchasing power parity (PPP) from the nonparametric nonlinear point of view and provide robust evidence that clearly indicates PPP holds true for these countries. Hence, the long‐run African countries exchange rate adjustments are in equilibrium with the relevant fundamentals as suggested by the PPP hypothesis in a nonlinear way.     

International monetary transmission in East Asia: Floaters,non-floaters,and capital controls

This paper analyzes the impacts of the United States (US) monetary shocks on East Asian countries using structural vector-autoregression (VAR) model. We find that the impacts of the US monetary shocks on East Asian domestic interest rates and exchange rates contradict conventional wisdom. The conventional exchange rate channel is unlikely to play much role in the transmission of the US monetary policy shocks to floaters in East Asian countries, excluding Japan. In these countries, the domestic interest rates respond strongly to the US interest rate changes, by giving up monetary autonomy, probably because of fear of floating. However, the domestic interest rate does not respond much in countries with fixed exchange rate regimes and capital account restrictions, such as China and Malaysia. This may suggest that the countries with fixed exchange rate regimes enjoy a higher degree of monetary autonomy, most likely with the help of capital account restrictions.     

Real exchange rate misalignment and business cycle fluctuations in the Asia-Pacific

Real exchange rate (RER) misalignment, which is the deviation between the actual real exchange rate from its equilibrium, occurs frequently among developing countries. Studies have shown that RER misalignment may have negative economic implications, such as a decline in economic growth, exports, and export diversification and an increased risk of currency crises and political instability. Using quarterly data for 22 sample countries from 1990 to 2018, this paper investigates the impact of RER misalignment on business cycles in the Asia-Pacific by employing a panel vector autoregression involving consumer price index (CPI) inflation, output gap, short-term interest rates, and RER misalignment. We find that RER overvaluation may reduce CPI inflation and short-term interest rates. We also find that the Asia-Pacific region is highly heterogeneous in that the output gaps of some countries, particularly from the Southeast Asian region, are more susceptible to RER misalignment shocks.     

Monetary policy shocks and exchange rates in Asian countries

In this paper, we empirically investigate the effects of monetary policy shocks on exchange rates in Asian countries. To do so, we use VAR models which impose sign restrictions on impulse responses to identify monetary policy shocks. We find that contractionary monetary policy shocks lead to significant exchange rate appreciation in Malaysia, the People’s Republic of China, and the Republic of Korea. However, in India, Indonesia, the Philippines and Thailand, we find either a significant depreciation or no significant effect. These results suggest that an interest rate increase (or decrease) may not necessarily shield Asian countries from exchange rate depreciation (or appreciation) pressure following a U.S. interest rate increase (or decrease).     

Bilateral Trade in the Asia-Pacific: A Case Study for Australia, USA, Japan and Singapore

This analysis of bilateral trade involves four Asia-Pacific nations (USA, Japan, Singapore and Australia) on a quarterly data set 1977 to 1994. The reduced-form model applied here derives from a structure which accommodates income, real exchange rate and real-balance effects. We find that bilateral balances between these countries are not cointegrated with some potential determinants, in particular real exchange rates. In the short run, appropriately defined, we find that Singapore’s trade with the USA and Japan is influenced by real exchange rates; Australian-Japanese and Australian-US trade is influenced by real income and real-cash-balance effects but not real exchange rates while USA-Japanese bilateral trade is influenced only by real-cash-balance effects. The general conclusion is that real exchange rates have only limited effects on these selected Asia-Pacific bilateral trading patterns, while real-balance and income effects have a greater impact over the short run.     

Nontradable Goods and the Real Exchange Rate

How important are nontradable goods and distribution costs to explain real exchange rate dynamics? We answer this question by estimating a general equilibrium model with intermediate and final tradable and nontradable goods. We find that the estimated model can match characteristics of the data that are relevant in international macroeconomics, such as real exchange rate persistence and volatility, and the correlation between the real exchange rate and other variables. The distinction between tradable and nontradable goods is key to understand real exchange rate fluctuations, but the introduction of distribution costs is not. Nontradable sector technology shocks explain about one third of real exchange rate volatility. We also show that, in order to explain the low correlation between the ratio of relative consumption and the real exchange rates across countries, demand shocks are necessary.     

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.     

Does Economic Policy Uncertainty Predict Exchange Rate Returns and Volatility? Evidence from a Nonparametric Causality-in-Quantiles Test

Recent studies have analysed the ability of measures of uncertainty to predict movements in macroeconomic and financial variables. The objective of this paper is to employ the recently proposed nonparametric causality-in-quantiles test to analyse the predictability of returns and volatility of sixteen U.S. dollar-based exchange rates (for both developed and developing countries) over the monthly period of 1999:01–2012:03, based on information provided by a news-based measure of relative uncertainty, i.e., the differential between domestic and U.S. uncertainties. The causality-in-quantile approach allows us to test for not only causality-in-mean (1st moment), but also causality that may exist in the tails of the joint distribution of the variables. In addition, we are also able to investigate causality-in-variance (volatility spillovers) when causality in the conditional-mean may not exist, yet higher order interdependencies might emerge. We motivate our analysis by employing tests for nonlinearity. These tests detect nonlinearity, as well as the existence of structural breaks in the exchange rate returns, and in its relationship with the EPU differential, implying that the Granger causality tests based on a linear framework is likely to suffer from misspecification. The results of our nonparametric causality-in-quantiles test indicate that for seven exchange rates EPU differentials have a causal impact on the variance of exchange rate returns but not on the returns themselves at all parts of the conditional distribution. We also find that EPU differentials have predictive ability for both exchange rate returns as well as the return variance over the entire conditional distribution for four exchange rates.     

Mean Reversion of Real Exchange Rates in High-Inflation Countries

We test for mean reversion in real exchange rates using data from five countries, four of which have experienced episodes of high inflation. Using monthly data for Argentina, Brazil, Chile, Colombia, and Israel, we find that a stochastic unit root model is typically appropriate (Brazil is the exception). Kalman filter estimates of the stochastic unit roots show sharp deviations from unity associated with high inflation episodes. This suggests that stochastic unit root models are a more appropriate way to model mean reversion in real exchange rates for high inflation countries than models with fixed rates of mean reversion.     

Real Exchange Rates, Valuation Effects and Growth in Emerging Markets

We compare the relationship between net capital inflows, real exchange rate movements and growth for twenty emerging markets and twelve developed countries over the period 1985–2004. In developed countries low real exchange rates are associated with faster growth, but in emerging markets depreciations depress growth, even outside crisis periods, and are closely correlated with declines or reversals in net capital inflows. To investigate valuation effects of currency movements, we construct debt-weighted real exchange rate indices for emerging markets, which are more closely correlated with growth than trade-weighted indices.     

THE ROLE OF COMMODITY TERMS OF TRADE IN THE DETERMINATION OF THE REAL EXCHANGE RATES OF THE MEDITERRANEAN COUNTRIES

The aim of this paper is to investigate whether there exists a long‐run relationship between the real exchange rate and the commodity terms of trade in the so‐called Mediterranean or MENA countries. These economies are good candidates for this type of formulation, as are commodity exporting countries. Using cointegration techniques, we find long‐run relationships linking the real exchange rate and a commodity‐based measure of the terms of trade. Therefore, commodity terms of trade are a potential explanation for the apparent nonstationarity of MENA countries’ real exchange rates previously found in the empirical literature.     

Optimal Exchange Intervention in an Inflation Targeting Regime: Some Cautionary Tales

Devaluations and fiscal retrenchments coming from developed countries are buffeting less developed countries. Many emerging market countries have adopted inflation targeting as “best practice,” but now they are being advised to enhance their inflation targeting regimes with foreign exchange intervention. Here we use a DSGE model to tell some cautionary tales about this advice. A Taylor rule guides interest rate setting, while foreign exchange interventions are used as a second tool of monetary policy. These interventions are effective in our model since domestic and key currency bonds are imperfect substitutes. We derive optimal (Ramsey) intervention policies in response to foreign devaluations and fiscal retrenchments, and find that they are rather complex. So, we compare the optimal responses to policies that simply smooth real or nominal exchange rate movements. Our results suggest that discretion may be the better part of valor: pure inflation targeting may come closer to the optimal policy than exchange rate smoothing. A secondary result may also be of some interest: foreign exchange interventions have a stronger impact on inflation and output in an inflation targeting regime than do sterilized interventions; the Taylor rule augments the effects of a given intervention.     

Yen-synchronization of floating East Asian currencies: A regime-switching regression model and micro-structural analysis

Using a regime-switching regression model, we find evidence of synchronization between the Swiss-franc exchange rates of floating East Asian currencies and the Swiss-franc–Japanese-yen exchange rate over the period 1999–2006. The volatility of Swiss-franc–East-Asian currencies’ exchange rates is higher during the synchronization period than during the de-synchronization period. Contrary to traditional arguments concerning the yen-bloc, we find that the Export-Similarity Index and Foreign Portfolio Investment between Japan and East Asian countries are the two main determinants of yen-synchronization in the region. Finally, micro-structural analysis shows that the weeks of synchronization is greater when the yen is strong for Korea and Taiwan, but there are no asymmetric responses for Thailand, Indonesia, or the Philippines.     

Detecting currency manipulation: An application of a state-space model with Markov switching

Following an idea of Milton Friedman's “plucking model,” we propose to use a state-space model with Markov switching as an auxiliary tool for detecting currency manipulation. Without imposing any a priori restrictions, our model tests if fluctuations of a country's exchange rate are symmetric or if there exists a time-varying support level or resistance level of exchange rate. Using weekly and monthly data of countries on the “monitoring list” of the US Treasury as of April 2017, we find that exchange rates of China, South Korea, Switzerland, and Taiwan rarely fall below their time-varying trends, but are plucked upward from time to time by transitory shocks, suggesting that the FX (foreign exchange) authorities of these countries may have been intervening more actively against appreciation shocks. Our sub-sample analysis reveals that our model accurately captures the period of Switzerland's minimum exchange rate policy with probability of one and Japan's exchange rate rarely falls below its trend after implementing Abenomics. We discuss the difficulties of detecting FX intervention along with the relative advantage of our approach.     

Monetary Shocks and the Fundamental Determinants of the Real Exchange Rate under the Hong Kong Currency Board

To assess the claim that flexible markets render monetary policy unimportant under the currency board, we test the impact of monetary shocks on Hong Kong's real exchange rate. Using vector autoregressions, we find persistent effects of monetary shocks on the real exchange rate, implying money is not neutral in Hong Kong. We then estimate the equilibrium real exchange rate, employing the definition developed by Rogoff-Obstfeld-Stein. The divergence between the observed and equilibrium rates is clearly stationary throughout the 1980s, but after a key policy shift in 1991 that divergence becomes non-stationary. We conclude that Hong Kong's real exchange rate moved away from the real fundamentals in the latter period.     

Exchange rate expectations and foreign direct investment flows

Exchange Rate Expectations and Foreign Direct Investment Flows. — Theories about exchange rate expectations are difficult to check empirically. We study FDI data to find indirect evidence on the formation of exchange rate expectations by foreign direct investors. Using panel data techniques on exchange rate movements and FDI flows from the United States to 20 OECD countries we find that skewness of devaluations has a robust positive impact on FDI flows while average devaluation and its volatility do not. We view this evidence as consistent with the hypothesis that relatively large exchange rate movements generate mean-reverting long-run expectations. This finding is consistent with survey-based evidence on exchange rate expectations.     

Chinese monetary policy and the banking system

Chinese monetary policy differs from that of many other countries in its use of multiple policy instruments. This paper assesses the effectiveness of some of the instruments employed, using a model of the banking sector and elasticities estimated from Chinese data. We find that direct interest rate changes are a poorer instrument of monetary control in China than changes in reserve requirement ratios and loan-to-deposit ratios. This finding is based on the ambiguous estimated response of deposit demand to such changes, and may help to explain why changes to administered interest rates have been used sparingly as an instrument of Chinese monetary policy. We also find that the ambiguous deposit demand response could pose challenges for the effectiveness of open market operations under interest rate liberalisation, while exchange rate liberalisation is likely to make monetary instruments more powerful.     

Exchange rates,price levels,and inflation targeting: Evidence from Asian countries

This study examines how the adoption of inflation-targeting influenced exchange rate pass-through and volatility in four Asian countries –Indonesia, South Korea, the Philippines, and Thailand – over the sample period of January 1990 to June 2007. We find that adopting inflation targeting helped reduce pass-through in South Korea, and Thailand, while the results are less clear for Indonesia and the Philippines. Nevertheless, the findings indicate that inflation targeting caused a decline in exchange rate volatility in all four countries. The important lesson from the experiences of these Asian countries is that the adoption of inflation targeting contributes to achieving the ultimate goal of inflation stability through reducing exchange rate pass-through or variability.     

PPP in OECD Countries: An Analysis of Real Exchange Rate Stationarity, Cross-Sectional Dependency and Structural Breaks

The stationarity of OECD real exchange rates over the period 1972?C2008 is tested using a panel of 26 member countries. The methodology followed stems from the need to meet several key concerns: (i) the identification of which panel members are stationary; (ii) the presence of cross-sectional dependence among the countries in the panel; and (iii) the identification of potential structural breaks that might have occurred at different points in time. To address these concerns, we employ a recent test that examines the time series properties of the data within a panel framework, namely the Hadri and Rao (Oxford Bulletin of Economics and Statistics 70: 245?C269, 2008) panel stationarity test. The real exchange rates of the 26 OECD countries are found to be stationary when considered as a panel, but only after allowing for endogenously-determined structural breaks and cross section dependence. We also find that once these structural breaks are removed from the underlying series, the half-life of shocks to the real exchange rate is much shorter than has been calculated in earlier studies.     

Interest rates, exchange rates and international adjustment: BW II dynamics

Recent attempts to explain the dynamics of adjustment of dollar exchange rates in the face of an anticipated deterioration of the US net international investment position have focused on portfolio balance models of exchange rate determination. In this paper we argue that such models are useful in understanding the behavior of dollar exchange rates with emerging market currencies but, consistent with a large body of empirical research, are not useful in understanding changes in the dollars value against the euro or the currencies of other developed countries. We conclude that portfolio preferences of governments of emerging markets provide the most plausible explanation for the persistent US current account deficit.