Inflation,growth and exchange rate regimes in small open economies

Summary. This paper compares the merits of alternative exchange rate regimes in small open economies where financial intermediaries perform a real allocative function, there are multiple reserve requirements, and credit market frictions may or may not cause credit rationing. Under floating exchange rates, raising domestic inflation can increase production if credit is rationed. However, there exist inflation thresholds: increasing inflation beyond the threshold level will reduce domestic output. Endogenously arising volatility may be observed independently of the exchange rate regime. Private information - with high rates of domestic inflation - increases the scope for indeterminacy and economic fluctuations.Received: 26 March 2002, Revised: 29 October 2002JEL Classification Numbers: E32, E44, F33.P.L. Hernandez-Verme: I would like to thank Leonardo Auernheimer, Valerie Bencivenga, Dean Corbae, Scott Freeman, Todd Keister, Beatrix Paal, and Maxwell Stinchcombe for very helpful comments and suggestions. Very special thanks are due to Bruce D. Smith. The paper also benefited from the discussions in the seminars in CIDE, the Federal Reserve Bank of Atlanta, the Federal Reserve Bank of Kansas City, Indiana University, ITAM, Purdue University, the Second Annual Missouri Economics Conference, Texas A&M, the University of Missouri and the University of Texas at Austin.     

Quasi-fundamental exchange rate variation

Summary. This paper uses a general equilibrium model to study the determination of the exchange rate in an economy with fundamental uncertainty. The model has steady state equilibria in which the exchange rate is constant. These equilibria may coexist with “quasi-fundamental” equilibria – nonstationary equilibria in which the exchange rate displays stochastic fluctuations that are correlated with the fluctuations in fundamental random variables. The quasi-fundamental equilibria are Pareto dominated by the corresponding constant-exchange-rate steady states. They also converge to these steady states, inevitably or with positive probability. Received: October 2, 1999; revised version: March 26, 2002 RID="*" ID="*" This paper began as a joint project with Alex Mourmouras, who has made many helpful comments and suggestions but is not responsible for any errors or deficiencies. In addition, I thank an anonymous referee for helpful comments.     

我国汇率与存款利率的关系研究：2000.1-2007.8

本文通过对2000年1月到2007年8月期间的人民币汇率与利率的关系进行了格兰杰因果检验,并采用单位根检验,建立VAR模型,通过脉冲响应函数和方差分解分析了二者的关系。结果表明,汇率变动影响着居民储蓄存款利率的变化较为显著,而居民储蓄存款利率影响汇率变动的力度较弱。我国存在着阻碍汇率利率联动的制度、经济等因素。     

Exchange rate volatility and the mixture of distribution hypothesis

This study sheds new light on the mixture of distribution hypothesis by means of a study of the weekly exchange rate volatility of the Norwegian krone. In line with other studies we find that the impact of information arrival on exchange rate volatility is positive and statistically significant, and that the hypothesis that an increase in the number of traders reduces exchange rate volatility is not supported. The novelties of our study consist in documenting that the positive impact of information arrival on volatility is relatively stable across three different exchange rate regimes, and in that the impact is relatively similar for both weekly volatility and weekly realised volatility. It is not given that the former should be the case since exchange rate stabilisation was actively pursued by the central bank in parts of the study period. We also report a case in which undesirable residual properties attained within traditional frameworks are easily removed by applying the log-transformation on volatilities.

Effects of exchange rate volatility on bilateral import performance of Vietnam: A dynamic Generalised method of Moments panel approach

The paper examines to what extent exchange rate volatility affects Vietnam’s bilateral import value. The two-step system generalized method of moments (GMM) was employed on panel data over a 10-year period. Exchange rate volatility was generated by two measures, including generalised autoregressive conditional heteroskedastic (GARCH) and moving standard deviation (MOVSD). A variety of diagnostic tests which ensure the consistency of GMM estimates were discussed. The main findings confirm that all explanatory variables demonstrated the expected signs, and exchange rate volatility has positive impacts on Vietnam's import flows. However, there is a large overall difference between the results produced with those two volatility measures.     

The behavior of the exchange rate in the genetic algorithm with agents having long memory

This paper studies the behavior of the exchange rate in Kareken and Wallace (1981)'s model under the genetic algorithm adaptation with agents having long memory. The simulation results show that, if agents have full memory, the average portfolio fraction will converge, and the initial equilibrium that it converges to is history dependent. Under the lasting evolutionary pressure of the noise trader, the market will eventually drift from one equilibrium to another, and asymptotically will converge to the neighborhood of an equilibrium with agents putting their savings equally into two currencies. If the agents do not have full memory, the foreign exchange market will show periodic crisis. Before and after a market crises, the average portfolio fraction will converge to different stationary equilibria. A mean difference equation of the average portfolio fraction is also given to describe the dynamics of the model.

Foreign interest rate shocks and exchange rate regimes in East Asia

Using a theoretical dynamic stochastic general equilibrium model and an empirical panel vector autoregression, we assess the transmission of foreign real interest rate shocks on the volatility of various key macroeconomic variables in nine small open economies in East Asia taking into account the role of exchange rate regimes. Both the theoretical and empirical findings confirm the hypothesis that flexible exchange rate may work as a shock absorber when the economy is hit by foreign real interest rate shocks. The findings suggest a clear trade-off between the volatility of real exchange rate and real output to foreign interest rate shocks, both the US and G7 real interest rates, where the responses of real output are mitigated in countries that have more flexible exchange rate regime.     

The demise of commodity price agreements: the role of exchange rates and special interests

We derive the equilibrium joint distribution of exchange rate and commodity price in a two-country rational expectations model. The correlation between commodity price and exchange rate appears crucial for the stability of commodity markets. This result arises from the common practice to quote commodity prices in consuming countries' currency, which subjects producing countries to the currency risk. Welfare results of commodity price stabilization are obtained and facilitate the interpretation of the position taken by industrialized countries long opposed to international commodity agreements. We apply our model to the Philippines and investigate the potential effects of the International Sugar Agreement (ISA) on the various conditional volatilities of the model. We conclude on the relative ineffectiveness of these agreements in limiting fluctuations of sugar prices.     

The impact of exchange rate volatility on commodity trade between the US and Thailand

The impact of exchange rate volatility on trade flows continues to occupy the international finance literature. More recent studies have deviated from the traditional approach of using aggregate trade flows and have employed trade data at commodity level. This study investigates the impact of exchange rate uncertainty on the trade flows of 118 US exporting industries to Thailand and 41 US importing industries from Thailand. We find that exchange rate uncertainty has short-run effects on the trade flows of most industries. In the long-run, the main determinants of the trade flows are the level of economic activity in both countries.     

中美贸易失衡与人民币汇率“操纵”——基于汇率与贸易收支关系的实证研究

基于2002年1月至2011年12月的月度数据,运用自回归分布滞后(ARDL)模型,分别从总体和分行业的角度,探讨人民币兑美元实际汇率、汇率波动率与中美贸易收支之间的关系。研究结果表明,无论长期还是短期,人民币汇率水平和汇率波动率对中美两国之间总体和分行业贸易收支差额均不会产生显著影响。该结论意味着无论长期还是短期,中国政府都无法通过汇率操纵来达到扩大中美贸易收支顺差的目的。     

Understanding changes in exchange rate pass-through

Recent research suggests that there has been a decline in the extent to which firms “pass-through” changes in exchange rates to prices. This paper provides further evidence in support of this claim. Additionally, it proposes an explanation for this phenomenon. The paper then presents empirical evidence of a structural break during the 1990s in the relationship between the real exchange rate and CPI inflation for a set of fourteen OECD countries. It is suggested that the recent reduction in the real exchange rate pass-through can in part be attributed to the low inflationary environment of the 1990s.     

A non-parametric analysis of ERM exchange rate fundamentals

In this paper we present evidence concerning the number of common stochastic trends in three major ERM exchange rates. The results indicate the presence of a single common trend driving these currencies and from this we suggest that the common trend can be considered as the non-parametric fundamentals for the three selected currencies. Using a non-parametric technique, the Alternating Conditional Expectations (ACE) algorithm, we obtain evidence for the existence of non-linearities for two out of three currencies with a functional form, related to the estimated non-parametric fundamentals, close to the S-shape given by the basic target zone model.      

Nonlinear exchange rate dynamics under stochastic official intervention

Many studies employ non-linear models to explain or forecast the exchange rate and find their superiority. This article builds an exchange rate model of managed float under conditional official intervention. In the model, the government minimizes social loss through a trade-off between targeting the exchange rate and lowering intervention costs. We obtain an endogenous threshold model and derive an analytical solution of the exchange rate stochastic interventions. The implication of a managed float causing a lower volatility of the exchange rate has been found by past empirical studies. Our model provides not only a justification for the central banks' conditional interventions but also a rationale for the use of regime-switching models of two states (intervention vs. non-intervention) in the empirical studies of exchange rates.     

Communication and exchange rate policy

Monetary authorities in the G3 economies have shifted in recent years towards communication as their primary policy tool to influence exchange rates. The paper assesses the effectiveness of communication, or oral interventions, by the G3 monetary authorities. It provides two key findings. First, G3 communication policies have constituted an effective policy tool in influencing exchange rates in the desired direction. And second, communication has been effective independently from the stance and direction of monetary policy and the occurrence of actual interventions. By contrast, the effectiveness of communication is strongly related to the degree of uncertainty and the positioning of participants in FX markets. Taken together, the results provide support for micro-based approaches to exchange rate modeling and are consistent with the argument that interventions affect exchange rates primarily through a coordination channel rather than a signaling channel.     

Volatility trade-offs in exchange rate target zones

The volatility trade-offs (i.e. the negative relationships between exchange rate variability and the interest rate differential) exhibited in the Krugman [Krugman, P. (1991). Target zones and exchange rate dynamics. Quarterly Journal of Economics, 106, 669–682.] model depend on the assumption of uncovered interest rate parity (UIP). However, the bands for several economies in Latin America and Eastern Europe are substantially different from those within the European Monetary System (EMS), in that their parity relationship deviates from UIP and volatility trade-offs do not exist. This paper develops a graphical exposition and uses it to show that the degree of capital mobility may serve as a plausible vehicle to explain the empirical evidence found in Krugman's regime of exchange rate target zones. Based on a Fleming-type stochastic macro model, we find that when capital mobility is relatively low, exchange rate variability exhibits a positive relationship with the interest rate differential. This result can be regarded as a possible way of resolving the conflicting outcomes between Krugman's prediction and existing empirical observations.     

Capital inflows, fiscal discretion, and exchange rate policy

Many writers have argued for the benefits of a credible fixed exchange rate (a hard peg) as a commitment device in an open economy. But historically, fixed exchange rates have often been associated with large current account deficits and episodes of ‘over-borrowing’. This paper develops a model of capital inflows that are linked to the exchange rate regime because of endogenous fiscal policy. The key message of the paper is that a hard peg is undesirable in the absence of commitment in fiscal policy. In face of a credible fixed exchange rate, the fiscal authority subsidizes capital inflows. The economy will engage in inefficiently high international borrowing, and in welfare terms may end up worse off than under capital market autarky. To eliminate the incentive to subsidize borrowing, the monetary authority must follow a flexible exchange rate rule in which capital inflows lead to exchange rate appreciation. If fiscal policy must be financed by money creation rather than direct taxation, then a fixed exchange rate rule may cause both over-borrowing and a subsequent exchange rate crisis.     

Calibration of implied volatility for the exchange rate for the Chinese Yuan from its derivatives

Revised implied volatility curves and surfaces for the Chinese Yuan (CNY) exchange rate are obtained from market quotations for CNY non-deliverable options by solving an inverse problem of foreign exchange option pricing, which is calculated using a regularization approach in an optimal control framework. To take account of the market expectation for the CNY exchange rate, a stochastic adjusted factor is applied that follows a Vasicek model with parameters fitted from market quotations for CNY non-deliverable forwards. A well-posed numerical scheme is implemented.     

Trade liberalization,the exchange rate and job flows in Brazil

Brazil underwent a large trade liberalization process in the 1990s. Over the period, manufacturing employment decreased significantly, generating public debate on the need to revert liberalization. This paper aims to identify the actual effect of trade liberalization on employment, separating it from exchange rate movements using a gross job flow approach. Our novel dataset covers all sectors and formally registered enterprises, and we use new sector specific exchange rate data. Our estimates suggest that greater openness reduce jobs through increased job destruction, with no effect on job creation, but the exchange rate matters also. Depreciations expand the number of jobs in manufacturing by increasing creation, with no effect on destruction.     

从贸易摩擦到汇率系统的国家利益冲突

本文由国际贸易理论中存在的多童均衡引发的国家利益冲突从而引起世界各国在国际贸易中面临国家竞争战略的机制这一论点出发,以美日两国国家竞争战略的机制选择为例,阐明汇率系统的冲突已经成为当前世界各国国家利益冲突的主要形式.这一研究结论为中国国家竞争战略的选择和制定提供了一种思路.