Real exchange rates under alternative nominal exchange-rate systems

The paper develops an equilibrium model of the determination of exchange rates, the relative price of nontraded goods, and the current account. The focus is on the effects of various real and nominal disturbances and the conditions under which the nominal exchange-rate system is neutral with respect to real variables in the economy. The model demonstrates an assymetry in the roles of trade and nontraded goods in affecting exchange rates. An econometric investigation of the raltion between the exchange-rate system and the variability of real exchange rates provides some evidence against the neutrality hypothesis.     

Real exchange rate fluctuations, endogenous tradability and exchange rate regimes

The real exchange rate is driven by fluctuations of the relative price of traded goods and the relative price of nontraded to traded goods. This study explains the variance decomposition of the real exchange rate using a stochastic dynamic general equilibrium model of comparative advantage with money. Given interest rate shocks, exchange rate stability reduces the covariance between the two relative prices and raises the contribution of the relative price of nontraded to traded goods. Productivity shocks do not alter the covariance across exchange rate regimes and let the relative price of traded goods drive the real exchange rate.     

EXCHANGE RATE MISALIGNMENT IN DEVELOPING COUNTRIES

This article analyzes the theory of equilibrium real exchangerates and defines misalignment as a deviation of the real exchangerate (RER) from its equilibrium level. The role of macroeconomicpolicies is then analyzed under three alternative nominal exchangerate regimes: predetermined nominal exchange rates, floatingnominal rates, and dual or black market nominal exchange rates.This discussion points out how inconsistent macroeconomic policiesoften lead to real exchange rate misalignment. Corrective measures,including nominal devaluations and several alternative approaches,are then evaluated.      

U.S. real exchange rate fluctuations and relative price fluctuations

Traditional theory attributes fluctuations in real exchange rates to changes in the relative price of nontraded goods. This paper studies the relation between the United States’ bilateral real exchange rate and the associated bilateral relative price of nontraded goods for five of its most important trade relationships. We find that this relation depends crucially on the choice of price series used to measure relative prices and on the choice of trade partner. The relation is stronger when we measure relative prices using producer prices rather than consumer prices. The relation is stronger the more important is the trade relationship between the United States and a trade partner. Even in cases where there is a strong relation between the real exchange rate and the relative price of nontraded goods, however, a large fraction of real exchange rate fluctuations is due to deviations from the law of one price for traded goods.     

An examination of the effects of government purchases in an open economy

This paper examines the effects of permanent and transitory changes in government purchases in the context of a model of a small open economy that produces and consumes both traded and nontraded goods. The model incorporates an equilibrium interpretation of the business cycle that emphasizes the responsiveness of agents to intertemporal relative price changes. It is demonstrated that transitory increases in government purchases lead to an appreciation of the real exchange rate and an ambiguous change (although a likely worsening) in the current account, while permanent increases have an ambiguous impact on the real exchange rate and no effect on the current account. When agents do not know whether a given increase in government purchases is permanent or transitory the effect is a weighted average of these separate effects. The weights depend on the relative variances of the transitory and permanent components of government purchases.     

贸易摩擦、宏观经济波动与经济开放程度的选择

本文构建一个包含关税冲击以及外汇风险溢价的两国开放经济DSGE模型,创新地揭示了关税冲击造成实际汇率波动的“直接效应”与“间接效应”,刻画了关税变动、贸易条件与实际汇率之间的动态关系与作用机制。我们深入分析了不同经济开放程度下贸易摩擦造成的宏观经济波动以及经济福利损失。模拟结果表明,在一定贸易开放程度下,外国加收关税一方面会导致本国贸易条件恶化,引发出口及产出下降;另一方面会导致本国汇率贬值,引发出口及产出增长。关税冲击发生后短期中汇率贬值效应占优,本国产出会出现小幅上升,随后贸易条件恶化效应逐步显现,产出持续下降。福利分析结果表明,本国适度提升贸易开放度,虽然经济福利损失会小幅上升,但福利损失增加幅度小于外国,会在贸易摩擦竞争中形成相对优势;如果本国过度提高贸易开放度,则会导致本国福利损失大幅增加,并且大于外国福利损失增幅,会在贸易摩擦竞争中形成相对劣势。因此,应适度逐步有序地提升贸易开放度。此外,本国适度推进资本账户开放的政策能够改善贸易条件,促进本国经济增长。     

贸易摩擦、宏观经济波动与经济开放程度的选择

本文构建一个包含关税冲击以及外汇风险溢价的两国开放经济DSGE模型,创新地揭示了关税冲击造成实际汇率波动的“直接效应”与“间接效应”,刻画了关税变动、贸易条件与实际汇率之间的动态关系与作用机制。我们深入分析了不同经济开放程度下贸易摩擦造成的宏观经济波动以及经济福利损失。模拟结果表明,在一定贸易开放程度下,外国加收关税一方面会导致本国贸易条件恶化,引发出口及产出下降;另一方面会导致本国汇率贬值,引发出口及产出增长。关税冲击发生后短期中汇率贬值效应占优,本国产出会出现小幅上升,随后贸易条件恶化效应逐步显现,产出持续下降。福利分析结果表明,本国适度提升贸易开放度,虽然经济福利损失会小幅上升,但福利损失增加幅度小于外国,会在贸易摩擦竞争中形成相对优势;如果本国过度提高贸易开放度,则会导致本国福利损失大幅增加,并且大于外国福利损失增幅,会在贸易摩擦竞争中形成相对劣势。因此,应适度逐步有序地提升贸易开放度。此外,本国适度推进资本账户开放的政策能够改善贸易条件,促进本国经济增长。     

Endogenous tradability and some macroeconomic implications

While nontraded goods play an important role in many open economy macroeconomic models, these models have difficulty explaining the low volatility in the relative price of nontraded goods. In contrast to macroeconomic convention, this paper argues that the share of nontraded goods is endogenous, a time-varying product of macroeconomic shocks and trade costs that are heterogeneous across goods. A simple open economy model demonstrates that trade cost heterogeneity and a time-varying margin of tradedness dramatically reduces the volatility of nontraded prices. This also reduces the ability of real exchange rate adjustments to dampen current account imbalances.     

The Exchange Rate in the Presence of Transaction Costs: Implications for Tests of Purchasing Power Parity

With transaction costs for trading goods, the nominal exchange rate moves within a band around the nominal purchasing power parity (PPP) value. We model the behavior of the band and of the exchange rate within the band. The model explains why there are below-unity slope coefficients in regression tests of PPP, and why these increase toward unity under hyperinflation or with low-frequency data. Our results are independent of the presence of nontraded goods in the economy.     

Convergence,capital accumulation and the nominal exchange rate

This paper develops a flexible price, two-sector growth model with a nominal side to study the role of the exchange rate in transition dynamics. We adopt a standard small open economy model with traded and nontraded goods, where the engines of growth are exogenous productivity improvements and capital accumulation. We enhance this standard framework by adding a preference for real money holdings, captured by money-in-the-utility. We follow Schmitt-Grohé and Uribe (2003) and assume that the interest rate on bonds issued by the small open economy is debt-dependent, and interpret it as a simple financial friction. We show analytically that the choice of the exchange rate regime influences the transition dynamics of a small open economy through the balance sheet of the central bank. We then calibrate the model to explore the quantitative significance of our results. We find that the choice of the exchange rate regime has significant and lasting effects on prices, consumption, investment and sectoral allocations, and the composition of financial assets.     

分税与地方财政支出结构

本文研究了税收分成对地方财政支出结构的影响。理论分析发现,在地方政府的财政支出结构竞争中,税收分成比例的提高将直接导致地方政府增加生产性公共支出,发挥生产性支出的产出外部性,提高产出水平和自身税收收入水平,实现福利最大化。一系列经验分析显著地验证了上述结论,即当地级市政府的税收分成率提高10%,该地区生产性支出占比将提高1.39%。本文的分析和结论有助于解释中国地方财政支出结构变动的原因,从而为政府间税收分配改革提供有效的政策建议。     

The macroeconomic effects of monetary and fiscal policy in a small open economy: Does the exchange rate regime matter?

This paper develops a small open economy model in the spirit of Obstfeld and Rogoff (1995). The introduction of endogenous traded sector output unlocks current account and real exchange rate effects. Within this framework where specific consideration is given to the case with fixed but adjustable parities, exchange rate devaluation generates similar qualitative effects as a money supply expansion under floating rates. Output and external effects of government spending shocks are broadly consistent with the adjusted basic non-micro founded Mundell and Fleming (MF) framework, but differ in significant ways from the baseline MF model. Contrary to the textbook MF model a government expenditure shock depreciates the nominal exchange rate and generates real effects under the fixed rate system.     

Uniform Commercial Policy, Illegal Trade, and the Real Exchange Rate: A Theoretical Analysis

Countries on fixed exchange rates sometimes use uniform tariffcum subsidy (UTCS) schemes as a way of achieving a real depreciationwithout disturbing the nominal exchange rate. A potential drawbackof this policy in relation to an across-the-board devaluationis that a UTCS scheme provides incentives for illegal trade.Using an optimizing model with currency convertibility and illegaltrade. I find that welfare is lower under a UTCS scheme thanunder a corresponding across-the-board devaluation and thatin some cases the real exchange rate actually appreciates inresponse to an increase in the UTCS rate.     

解析人民币实际汇率的决定机制——基于巴拉萨-萨缪尔森效应的理论分析

中国经济高速增长的背景同人民币实际汇率持续贬值的现实构成了实际汇率理论中的一对尖锐矛盾,明显违背基于供给角度的巴拉萨-萨缪尔森效应。本文所设定的实际汇率传导模型表明,该效应仅在人民币实际汇率的内部传导环节成立,无法在外部环节得以显现。通过对模型约束条件的修正,本文分析了形成这一现象的原因。     

Understanding the Backus–Smith puzzle: It's the (nominal) exchange rate,stupid

Backus, Kehoe and Kydland (BKK 1992) demonstrated that if international capital markets are complete, consumption growth correlations across countries should be higher than their corresponding output growth correlations. In stark contrast to the theory, however, in actual data the consumption growth correlation is lower than the output growth correlation. By assuming trade imperfections due to non-traded goods, Backus, D.K., Smith, G.W. [1993 Consumption and real exchange rates in dynamic economies with non-traded goods. Journal of International Economics 35(3–4), 297–316] showed that there is an additional impediment at work that can lower the consumption growth correlation. While their argument was successful in partially explaining the puzzlingly low cross country correlation of consumption growth rates, it contributed to generating another puzzle because the data forcefully show that consumption growth is negatively correlated with the real exchange rate, which is also a violation of the theory. Using data for OECD countries, we decompose real exchange rate growth into its nominal exchange rate growth and inflation differential components, and find that nominal exchange rate movements are the main source for the Backus-Smith puzzle. We demonstrate the robustness of this finding by examining sub-samples of the data, by allowing for imperfect risk sharing due to ‘rule of thumb’ consumers, and by examining intranational data across the U.S. states where the nominal exchange rate is fixed.     

External Debt, Inflation, and the Public Sector: Toward Fiscal Policy for Sustainable Growth

Which tradeoffs are involved in formulating an external debtstrategy? Should expenditure be cut to improve the current account,or will this reduce future output growth, thus undermining thebenefits of any debt reduction? Are there alternatives thatallow satisfactory output growth without jeopardizing creditworthiness?How can the necessary surplus of savings over investment bebrought about at levels of investment high enough to sustainoutput growth? Should the government contribute to the internal adjustmentby reducing its deficit? Macroeconomic targets for inflationand growth, and creditworthiness constraints on debt issue,impose restrictions on the extent to which deficits can be financed.Can the government cover the deficit within these targets andconstraints? The absence of such consistency forebodes futurepolicy change and so undermines the credibility of the adjustmentprogram. The author uses empirical work on Turkey to illustratethe interactions between fiscal deficits and the macroeconomicvariables upon which fiscal consistency hinges.     

Currency devaluation and stock market response: An empirical analysis

We study local stock market reaction to currency devaluation by a country's central bank. Devaluations appear to be anticipated by the local stock markets, and there are significant negative abnormal returns even one year prior to the announcement of the devaluation. A negative trend in stock returns persists for up to one quarter following the first announcement, and then becomes positive thereafter, suggesting a reversal. We explore whether changes in macroeconomic variables prior to currency devaluations are related to abnormal stock returns. We find that stock returns are significantly lower if the devaluation is larger and if the country is a developing nation. Furthermore, stock markets decline more around devaluations if reserves are lower, if the real exchange rate has depreciated over the prior years, if the capital account has declined, if the current account deficit has gone up, or if the country credit rating has deteriorated.     

深化财政改革应保持收支同步推进

财政的分配职能主要是通过财政的收入与支出来实现的。对任何国家的政府而言，财政收支平衡应该是其财政的最高目标。尽管凯恩斯以后，有些国家政府实行以赤字财政政策来刺激经济增长、扩大需求、实现就业。但是，如果一国政府的财政赤字过大、收支难以平衡的话，那么国民对政府调控经济，发挥其职能作用的信任程度就将大打折扣。在我国，财政收支管理的“越位”与“缺位”问题已经是不争的事实，收入地出两条线的管理也显得极不协调，需要及时地进行改革。     

US Fiscal Sustainability and the Causality Relationship between Government Expenditures and Revenues: A New Approach Based on Quantile Cointegration

This paper first aims to reinvestigate the issue of US fiscal sustainability by using the quantile cointegration approach proposed by Xiao (2009 and 2012). Our empirical evidence indicates a quantile‐dependent cointegrating relationship between government expenditures and revenues. In addition, this paper examines the long‐run causality relationship between expenditures and revenues by using the vector error‐correction (VEC) model with coefficients based on the different quantiles. Findings from the long‐run Granger‐causality analyses support the spend‐and‐tax hypothesis. Our investigation suggests that the government should show more discretion in increasing expenditures in the long run. Moreover, budget deficit reduction can only be achieved through reductions in government expenditures.