后危机时代全球货币冲突的理论、实践与影响

全球金融危机已使世界经济陷入衰退,为应对危机许多国家都寄希望于通过本币贬值来提振经济。随着美国量化宽松政策的轮番实施,发达国家以及南美和亚洲等新兴经济体相继卷入货币冲突,而中国就处于冲突的中心。全球货币冲突如果进一步演变为全球货币竞争性贬值,对世界经济和中国经济都将产生难以估量的影响,因此,有必要进行深入的研究。为此,本文分析了开放经济条件下全球货币冲突的理论根源、实践及其影响,并由此提出了中国的应对之策。     

Forward premium anomaly of the British pound and the euro

Using pooled data, we study the forward discount bias (FDB) of 24 British pound and 24 euro exchange rates. The results show a FDB during “non-crisis” periods, which is more pronounced for advanced than emerging economies. This finding is especially striking during the period of the European sovereign debt crisis (2010 to 2013), for which we find a FDB for the currencies of advanced economies versus the pound, but not versus the euro. The differences between the results for advanced and emerging country currencies are mainly related to whether the period under investigation is classified as a crisis period or not. Our findings support the literature that relates carry trade activities to the FDB; as such activities are assumed to decrease during times of uncertainty. Further, our study shows evidence for asymmetric behavior with respect to the forward premium, as well as, to the overvaluation and undervaluation of the currency. We find negative slope coefficients for advanced country currencies during crisis periods when the pound and the euro are overvalued and sell at a premium. This suggests that even during crisis periods carry trade activities are present, which may be related to investors' assumptions of higher returns when an overvalued pound or euro is expected to move back to equilibrium.     

Does the Exchange Rate Respond to Monetary Policy in Mexico? Solving an Exchange Rate Puzzle in Emerging Markets

This paper argues that the null or weak response of emerging market currencies to domestic monetary policy documented in the literature is the result of wide event windows. An event study with intraday data for Mexico shows that an unanticipated tightening appreciates the currency and flattens the yield curve, consistent with the evidence for advanced economies. With daily event windows, however, only the yield curve responds to monetary policy. Noise in daily exchange rate returns explains the lack of response of the currency. Such noise gives rise to a bias that declines after controlling for potential omitted variables.     

Exchange Rate Changes and Inflation in Post‐Crisis Asian Economies: Vector Autoregression Analysis of the Exchange Rate Pass‐Through

Macro‐economic consequences of large currency depreciations among the crisis‐hit Asian economies varied from one country to another. Inflation did not soar after the Asian currency crisis of 1997–98 in most crisis‐hit countries except Indonesia where high inflation followed a very large nominal depreciation of the rupiah. The high inflation meant a loss of price competitive advantage, a key for economic recovery from a crisis. This paper examines the pass‐through effects of exchange rate changes on the domestic prices in the East Asian economies using a vector autoregression analysis. The main results are as follows: (i) the degree of exchange rate pass‐through to import prices was quite high in the crisis‐hit economies; (ii) the pass‐through to Consumer Price Index (CPI) was generally low, with a notable exception of Indonesia; and (iii) in Indonesia, both the impulse response of monetary policy variables to exchange rate shocks and that of CPI to monetary policy shocks were positive, large, and statistically significant. Thus, Indonesia's accommodative monetary policy, coupled with the high degree of CPI responsiveness to exchange rate changes was an important factor in the inflation‐depreciation spiral in the wake of the currency crisis.     

Real Sector Shocks and Monetary Policy Responses in a Financially Vulnerable Emerging Economy

When analyzing the appropriate response for monetary policy during a currency crisis, it is important to keep in mind two distinct channels: the effect of raising interest rates on exchange rates and the direct effect of exchange rate changes on output. The first pertains to the monetary side of the economy as given by the interest parity condition. The second pertains to the real side of the economy. The interaction between these two parts of the economy derives the equilibrium output and exchange rate in the economy. This paper expands on the Aghion et al. (2000) monetary model with nominal rigidities and foreign currency debt, to examine the interaction between the real and monetary sides of the economy and to analyze the effect of monetary policy on the real economy. We find that the effect of monetary policy on exchange rate and output is theoretically ambiguous. This in turn suggests that the appropriate monetary policy response could vary among countries at any point in time, or for a particular country between two different periods.     

非传统货币政策的退出指标和时机选择

应对金融危机的非传统货币政策实施以来,其退出问题日益成为国际关注的焦点。本文从货币政策传导机制理论出发,分析了危机状态下传统货币政策传导如何受阻,非传统货币政策如何影响受阻环节的市场因素来修复传导机制。本文以此为依据,构建了选择非传统货币政策退出时机的指标体系,针对不同操作手段、操作目标选取相应的金融市场指标和宏观经济指标。在此基础上本文分析了这些指标在政策实施前后的表现,并探讨美国、英国和欧元区国家等主要发达经济体非传统货币政策退出的时机选择。     

The Effects of Productivity Shocks,Financial Shocks,and Monetary Policy on Exchange Rates: An Application of the Currency Crisis Model and Implications for Emerging Market Crises

What kind of shock affects exchange rate dynamics? How much of an effect does the monetary policy have on exchange rates? To answer these questions empirically based on the currency crisis model, I use panel data on 51 emerging countries from 1980 to 2011, identify shocks, and apply instrumental variable methods. I found that both productivity shocks and shocks to a country’s risk premium affect exchange rates and a 1 percentage point increase in the policy interest rate is associated with a 1 percentage point appreciation of domestic currency. I further apply this method to Asian and Latin-American crises.     

关于货币政策在经济调整中的作用和面临的风险

该文通过分析重温了货币主义的主要观点,对于货币政策在本轮危机中扮演的角色以及过于灵活的相机抉择式的微调模式提出质疑;并回到货币主义的立场,以货币数量轮的视角来评判当前美国货币政策操作。文章认为货币政策不应过多关注资本市场,保持货币和基准利率相对平稳对于宏观经济运行至关重要。     

Remittances and Currency Crisis: The Case of Developing and Emerging Countries

Employing the first-generation currency crisis model of Flood and Garber (1984), I explore the financial effects of migrants' remittances on the economies of developing and emerging countries in a currency crisis. The model implies that remittances can contribute to a reduction in the likelihood of a currency crisis and appreciation in foreign exchange rates via the promotion of foreign exchange reserves. Panel estimation with twelve developing and emerging countries that previously experienced financial crises confirms the implications, suggesting that migrants' remittances can play a significant role in mitigating financial constraints and thus contribute to financial stability.     

Monetary policy and stock prices – Cross-country evidence from cointegrated VAR models

This study applies the Cointegrated Vector-Autoregressive (CVAR) model to analyze the long-run relationships and short-run dynamics between stock markets and monetary policy across five developed and three emerging economies. Our main aim is to check whether monetary policy plays an important role for stock market developments. As an innovation, monetary policy enters the analysis from three angles: in the form of a broad monetary aggregate, short-term interest rates and net capital flows. Based on this framework, we analyze whether central banks are able to influence stock market developments. Our findings suggest different patterns and causalities for emerging and industrial economies with the stock markets of the former economies more frequently related to monetary aggregates and capital flows. A direct long-run impact from short-term interest rates on stock prices is only observed for 3 out of 8 economies.     

Financial crisis,US unconventional monetary policy and international spillovers

We study the impact of US quantitative easing (QE) on both the emerging and advanced economies, estimating a global vector error-correction model (GVECM). We focus on the effects of reductions in the US term and corporate spreads. The estimated effects of QE are sizeable and vary across economies. First, we find the QE impact from reducing the US corporate spread to be more important than that from lowering the US term spread, consistent with Blinder's (2012) argument. Second, counterfactual exercises suggest that successive US QE measures might have prevented episodes of prolonged recession and deflation in the advanced economies. Third, the estimated effects on the emerging economies are diverse but generally larger than those found for the United States and other advanced economies. The estimates suggest that US monetary policy spillovers contributed to the overheating in Brazil, China and some other emerging economies in 2010 and 2011, but supported their respective recoveries in 2009 and 2012. These heterogeneous effects point to unevenly distributed benefits and costs of cross-border monetary policy spillovers.     

美国货币政策推升了新兴市场国家非金融企业杠杆率吗？

全球金融危机后,美国量化宽松货币政策的实施导致全球流动性异常充裕,对新兴市场国家非金融企业外部融资环境造成显著影响。本文运用28个新兴市场国家2003-2015年非金融类上市企业财务数据和美国影子利率数据对美国货币政策调整与新兴市场国家非金融企业杠杆率变动之间的关系进行了实证分析。结果显示,美国影子利率与新兴市场国家非金融企业杠杆率变动之间存在显著负相关关系,即美国影子利率的降低会促使新兴市场国家非金融企业杠杆率出现更大幅度的上涨。进一步地,这一影响在融资约束程度较高的企业、外部融资依赖度较高的行业以及资本账户开放程度较高但汇率弹性僵化的国家表现得更为显著。上述发现意味着新兴市场国家在调控企业部门杠杆率的过程中,除要考虑国内因素外,也应高度重视美国货币政策的变化。     

Dynamic efficiency of stock markets and exchange rates

We use generalized Hurst exponents to investigate long-range dependence across countries that have implemented an inflation targeting monetary policy regime and have a floating currency regime. We show that the degree of long-range dependence has changed after the 2008 crisis for equity markets but not as much for exchange rate markets. We compare results for developed and emerging economies and find that there still are some important differences but not as they were before the crisis. We also include an additional set of relevant countries and find that our results are more pronounced for inflation targeters. We discuss several implications of these results.     

Monetary policy for small emerging market economies: the way forward

Discretionary monetary policy for small emerging market economies, especially in Sub-Saharan Africa, can benefit from closer scrutiny and strengthening through appropriate and incremental policies. Field research and related analysis challenge the conventional wisdom on the relationship between interest rates and inflation. Lessons learned suggest that monetary policy needs to be tempered to prevailing social, cultural, and socio-economic factors. In addition, access to credit through financial inclusion policies and programmes needs to be addressed, and the overarching role of good governance cannot be overlooked. Given the broad scope of weaknesses inherent in monetary policy-making (and the systems that support it) in small emerging market economies such as Botswana's, two options are available to tackle the problems: either monetary union should be adopted or incremental new directions to the status quo are required.     

开放经济下的“双支柱”调控稳定效应研究

本文研究了管理浮动汇率制下我国货币政策和宏观审慎政策双支柱的调控稳定效应。首先,本文从实证层面考察了人民币汇率升贬值对央行货币政策的非对称影响。接着,本文构建了包含银行部门与货币错配的开放宏观经济模型,重点分析了在面对美联储加息、人民币贬值压力的情况下,货币政策(包括对汇率的反应)和宏观审慎政策(对外债的逆周期调节)的配合如何影响宏观经济和金融的稳定。结论表明,如果缺少宏观审慎政策的配合,货币政策对汇率的反应将导致产出、通货膨胀和资产价格等经济金融变量的波动增大。在存在宏观审慎政策的前提下,相对于完全浮动汇率制,管理浮动汇率制从中长期看能进一步促进产出和外债等核心变量的稳定。     

Are global shocks leading indicators of currency crisis in Viet Nam?

This paper aims to identify leading indicators of a currency crisis in Viet Nam based on an early warning system for the period 1996–February 2016. This paper found that global financial shocks (e.g., regional and global financial crisis, unexpected changes in monetary policy of largest economies such as the United States and the People’s Republic of China), and domestic credit growth rate are leading indicators of a currency crisis in Viet Nam in all three models. Deficits in trade balance, international reserves, and overvaluation of the dong are also good indicators. In addition, a model in which a currency crisis or turbulence in the foreign exchange market is defined based on the exchange market pressure and parallel market premium, with window length of 2 months, outperformed for predicting a currency crisis in Viet Nam. Empirical results suggested that probability of predicting a true currency crisis was 77.5%.     

Explaining Monetary Spillovers: The Matrix Reloaded

This paper relies on a high-frequency identification approach to provide new insights into monetary policy spillovers by major central banks. Our long and broad sample (1999–2019, from four major economies to 47 advanced and emerging market economies) allows us to accurately identify the properties of spillovers and to shed light on different transmission channels. We find that spillovers by the Fed to foreign interest rates are economically large, but more surprisingly, document an intensification of spillovers by the European Central Bank over time. Spillovers are more significant to bond yields in advanced economies than they are to those in emerging markets. Differentiating across key spillover channels, we find strongest support for a financial links channel, but weaker evidence for the macroeconomic links channel and foreign exchange regime channel.     

An event study of institutions and currency crises

We use event study methodology to examine the behavior of seven institutional variables eighteen months prior to and after a currency crisis. Our data on institutions include bureaucratic quality, corruption, ethnic tensions, external conflict, internal conflict, government stability, and law and order over the period 1984-2002. Our country coverage includes forty industrial, emerging market, and developing economies for various regions of the world. The graphical event study shows that there are many instances where institutions are weaker in periods before and after a currency crisis than during tranquil periods. The evidence is most compelling for government stability, law and order, bureaucratic quality, and corruption. We also test for differences in the mean values of institutional variables in turbulent periods around a crisis event and tranquil, non-crisis periods. Results from our tests generally complement evidence from the event study.     

The Core,Periphery, and Beyond: Stock Market Comovements among EU and Non‐EU Countries

Using linear and nonlinear correlations, copulas, quantile dependence and lower tail dependence, we find that (1) equity markets of the advanced European Union (EU) countries comove more closely with each other than with the peripheral economies, (2) comovements with non‐EU countries are lower, (3) relative comovement structure before, during, and after the global financial crisis has been very stable, and (4) the level of comovements remained virtually the same between the crisis and post‐crisis periods. Our results are robust to controlling for Fama‐French, U.S. and global risk factors, as well as monetary policy, market interest rates, exchange rates, and uncertainty.     

House Price Booms,Current Account Deficits,and Low Interest Rates

Domestic factors, such as credit and preference shocks, can explain the negative correlation between house prices and the current account in the U.S. and several other countries before the recent crisis. These shocks, however, cannot account for the fall of world real interest rates observed in the data. Expansionary monetary policy shocks in the U.S., coupled with exchange rate pegs to the dollar in emerging economies, are crucial to understanding the evolution of the real interest rate. Yet, monetary policy factors play virtually no role for house prices and the current account.