A re-examination of the impacts of macroeconomic and financial shocks on real exchange rate fluctuation: evidence from G7 and Asian countries

ABSTRACT

This paper aims to investigate the sources of real exchange rate fluctuation by utilizing sign restrictions in structural vector autoregressive (SVAR) method. Under an agnostic identification scheme, the empirical results show that the delayed overshooting puzzle still exists in response to monetary shock even if price puzzle is ruled out by construction. In contrast, all countries experience a significant initial real depreciation, and then gradually appreciate in response to currency risk premium (CRP) shock. This finding is consistent with Dornbusch’s overshooting model. In addition, I examine the importance of investors’ expectations in determining the short-term variations in the real exchange rate. The results indicate that the CRP and expectation shocks obviously outperformed the demand, supply and monetary shocks in terms of explaining the real exchange rate fluctuation.     

Monetary and fiscal policy transmission in Poland

This paper combines a fiscal structural vector-autoregression (SVAR) with a monetary SVAR for the Polish transition economy. Data are constructed from scratch in order to account for features of the transition economy and for delays in implementing legislated government spending and tax changes (fiscal foresight). For monetary policy, we find no price puzzles in the combined SVAR. Also, fiscal foresight variables have no statistically significant effects. We calculate an initial government spending multiplier of 0.70, which later peaks at 1.61 for the cumulative multiplier. This multiplier is much larger than multipliers estimated in previous studies not combining fiscal and monetary policy, where they were found to be close to zero. On the other hand, the tax multiplier is generally near zero in our study. We demonstrate the importance of combining fiscal and monetary transmission mechanisms when assessing the effects of government macroeconomic policies.     

Empirical evaluation of nominal convergence in Czech Republic, Poland and Hungary (CPH)

We estimate a four variable structural vector auto regression (SVAR) model of the Czech Republic, Poland and Hungary economies in order to evaluate the links between the instruments of monetary policy and inflation outcomes. We find that the linkages between the interest rates and price levels are weak. However, the exchange rate constitutes the most important channel of monetary policy transmission for Poland and Hungary. For the Czech Republic, the link between interest rate rise and price level is rather indirect.     

INFORMAL CENTRAL BANK INDEPENDENCE: AN ANALYSIS FOR THREE EUROPEAN COUNTRIES

Changes in formal and informal central bank independence (CBI) in France, Italy and the United Kingdom in the period from the mid-1970s to the 1990s are examined; the major changes occurred in the 1990s, after the disinflations of the 1980s. Broad trends in the informal independence of central banks (CBs), defined as the ability to pursue price stability regardless of the government's preferences, are identified on the basis of a monetary policy narrative and an analysis of a set of qualitative determinants of informal independence. The most important determinants are the social/political acceptance that monetary policy is the sphere of the CB, the existence of anti-inflationary commitments in the form of intermediate targets for monetary policy, the degree of social consensus on the means and ends of macroeconomic policy, and the relative technical expertise of the CB. These broad trends help to explain some of the inflation experience of the 1980s and 1990s, which cannot be understood in terms of changes to formal CBI.     

Global Liquidity and Commodity Prices

While monetary easing and increasing participation of financial institutions in commodity trading have enhanced the financialization of commodity markets, this paper investigates empirically whether the impact of global liquidity on commodity prices has grown since the crisis. For each commodity group, this paper uses a structural vector autoregression (SVAR) model to address the short‐run relationship between global liquidity and commodity prices. The key finding is that the effect of global liquidity on commodity prices becomes more salient since the global financial crisis. This paper also suggests a price‐based liquidity indicator has a greater explanatory power for the commodity price dynamics than monetary aggregates.     

The Inexorable and Mysterious Tradeoff Between Inflation and Unemployment

This paper discusses the short-run tradeoff between inflation and unemployment. Although this tradeoff remains a necessary building block of business cycle theory, economists have yet to provide a completely satisfactory explanation for it. According to the consensus view among central bankers and monetary economists, a contractionary monetary shock raises unemployment, at least temporarily, and leads to a delayed and gradual fall in inflation. Standard dynamic models of price adjustment, however, cannot explain this pattern of responses. Reconciling the consensus view about the effects of monetary policy with models of price adjustment remains an outstanding puzzle for business cycle theorists.     

The role of the exchange rate in Canadian monetary policy: evidence from a TVP-BVAR model

A time-varying parameters Bayesian structural vector autoregression (TVP-BVAR) model with stochastic volatility is employed to characterize the monetary policy stance of the Bank of Canada (BoC) in terms of an interest rate rule linking the policy rate to the output gap, inflation and the exchange rate. Using quarterly bilateral Canadian–US data, we find such an interest rate rule to have little explanatory power for the early part of our sample starting in the mid-1980s, but to become more suitable to explain interest rate dynamics from the mid-1990s onwards. Whereas the exchange rate turns out to be the major determinant of the policy rate in the 1980s, its importance declines throughout the 1990s and 2000s, although it continues to be influential even towards the end of the sample period ending in 2015Q2. We also find interest rate shocks to have become more effective in influencing the macroeconomy over time, indicating that the BoC has continually gained monetary policy credibility. We associate this development with the BoC successively de-emphasizing the role of the exchange rate in informing interest rate decisions, thereby alleviating the potential monetary policy conflict between targeting the exchange rate and maintaining the price stability goal.     

Measuring monetary policy with empirically grounded identifying restrictions

This article reevaluates the impulse response functions (IRFs) to a monetary policy shock of the structural vector autoregression (SVAR). Identifying restrictions are specified and justified based on empirical evidence,i.e., conditional independence relations of variables, which is an important dimension that a good model must be able to mimic. The empirical-based approach is able to significant narrow down the set of admissible causal orders to identify the IRFs to a monetary policy shock (from 2,482 to 8). I find that most of the qualitative “stylized” features reported in the literature remain intact. However, the quantitative predictions are much less certain than what is commonly perceived.     

An explanation for the price puzzle: Asymmetric information and expectation dynamics

Using theoretical and empirical analyses, this paper shows that the expectation dynamics induced by information asymmetry between the Central Bank (CB) and the public can cause the price puzzle. The signalling and learning dynamics between the CB and a representative private-sector agent under asymmetric information is investigated. Inflation positively reacts to contractionary monetary policy because the change in the interest rate is perceived as a signal of the CB’s private information about higher future inflation and output by the public. The empirical section of the paper validates this theoretical argument using a VAR specification about the US economy. Besides providing an explanation for the price puzzle, the results of this paper has practical implications about transparency and monetary policy. The theoretical and empirical findings indicate that asymmetric information causes significant frictions in the transmission mechanism of monetary policy. These frictions induce short-run undesired effects like increase in expected inflation and actual inflation as a response to contractionary monetary policy which is identified as “the price puzzle”.     

我国货币政策有效性及其与股票市场的交互影响*——基于SVAR模型的实证研究

本文构建以货币政策变量、股票价格变量和宏观经济变量为基础且同时施加有短期和长期约束的结构向量自回归（SVAR）模型,将货币政策与股票市场的当期关系纳入分析,利用1997—2015年的数据,实证检验了我国货币政策和股票市场间的交互作用及其对宏观经济的影响。实证结果表明,现阶段我国货币政策冲击对股票市场没有显著影响,但股票价格冲击在2005年人民币汇率制度改革之后对我国的产出、M2供应及通货膨胀影响的显著性均明显提升。     

On the feasibility of monetary union: Does it make sense to look for shocks symmetry across countries when none of the countries constitutes an optimum currency area?

Usually, a monetary union is not considered feasible between countries if the correlations of shocks are positive but weak. This may not be so if the country with the larger output gap converges to full-employment equilibrium faster than the country with the smaller gap. We argue that common monetary policy can be destabilizing when countries' responses to non-monetary shocks are perfectly symmetric with a correlation of 1 but exhibit differing investment sensitivities to the real interest rate. We use Canada, Mexico and the United States to test the feasibility of a monetary union by documenting whether: 1) gross investments in Canada and Mexico are equally responsive to the real fund rate, and 2) Canada and Mexico's output growth and inflation respond differently to US monetary policy shocks and oil price shocks. This approach implicitly dictates whether the shocks themselves are symmetric or asymmetric. Using quarterly data and SVAR methodology, we conducted two layers of analysis. We estimated SVARs for the periods 1970–2008, 1970–1990 and 1991–2008 to find that a monetary union is feasible between Canada and the US for the first two sample periods. For Canada and Mexico, we find similar responses of output growth to US monetary policy shocks. We conducted further robustness tests by estimating two identified VARs with common US variables and oil prices for Canada and Mexico to assess commonality in responses to shocks with the US. These results affirm that a monetary union is also feasible between Canada and the US.     

中国房地产价格波动与宏观经济——基于SVAR模型的研究

房地产价格与宏观经济有着紧密的联系。本文利用1999年1季度至2009年2季度的居民消费价格指数、国内生产总值、货币供给与住宅价格指数的季度数据,应用结构向量自回归模型估计了供给冲击、需求冲击与货币政策冲击对中国房地产价格变动的动态影响以及房地产价格冲击对通货膨胀率、国内生产总值增长率与货币存量增长率变动的动态影响。结果显示正向的房地产价格冲击最终导致通货膨胀率和国内生产总值增长率上升到一个新的高度,使货币供给增长率下降到一个较低的水平;而正向的供给冲击、需求冲击与货币政策冲击最终均导致房地产价格增长率上升到一个新的高度。     

A structural VAR business cycle model for a volatile small open economy

New Zealand is a small economy exposed to a volatile climate, relatively volatile international trade prices, and its exposure to international financial markets has increased markedly since economic reforms in the 1980s. This paper applies identification techniques suggested by Cushman and Zha [Cushman, D.O. and Zha T.A., 1997. Identifying monetary policy in a small open economy under flexible exchange rates, Journal of Monetary Economics, 39, pp. 433–448.], Zha [Zha, T.A., (1999). Block recursion and structural vector autoregression, Journal of Econometrics, 90, pp. 291–316.] and Dungey and Pagan [Dungey, M. and Pagan, A., 2000. A structural VAR model of the Australian economy, The Economic Record, 76, pp. 321–342.] to develop a large four block structural VAR model of the New Zealand business cycle to capture these features. The model reveals that climate and international trade price shocks have been more important sources of business cycles fluctuations than international or domestic financial shocks. Furthermore, the model does not encounter the price and exchange rate puzzles that have bedevilled attempts to identify monetary policy shocks in small open economy SVAR models.     

货币中介目标的国际比较*——基于DAG SVAR模型

学术界围绕最优货币中介目标的选择,在利率、简单加总货币量、迪维西亚货币量之间争论不休。本文基于DAG SVAR模型,分别对美国、欧元区、英国的银行间隔夜拆借利率R、简单加总货币量M2、迪维西亚货币量D2对物价P、产出Y影响的相对重要性进行实证比较。结果发现,在美国,M2对Y的影响最大,R对P的影响最大;在欧元区,D2对Y的影响最大,M2对P的影响最大;在英国,M2对Y和P的影响都最大。总的来说,若货币最终目标是经济增长,则美国、英国的最优中介目标是简单加总货币量,欧元区的最优中介目标是迪维西亚货币量;若货币最终目标是物价稳定,则美国的最优中介目标是利率,欧元区、英国的最优中介目标是简单加总货币量。由此可见,对于不同的经济体或者不同的货币最终目标,最优中介目标的选择可能有所不同。本文的研究结论在一定程度上是对“利率普遍优于货币量,迪维西亚货币量普遍优于简单加总货币量”学术共识的反向补充。     

The Exchange Rate: A Shock Absorber or Source of Shocks in Turkey?

This study investigates the role of the exchange rate as shock-absorber as opposed to a source of its own shocks in Turkey during the period from 1990 to 2009 by employing a structural VAR framework with long-run and short-run restrictions. We find that the economic shocks have predominantly been asymmetric relative to one of the largest trading partner, the US. Our results provide evidence of the fact that while the major source of variability in exchange rates in the pre-2001 crisis period is mainly nominal shocks, a large proportion of the exchange rate variability can be attributed to supply and demand shocks in the post-2001 crisis period. This suggets that, rather than reacting to shocks to the foreign exchange market, such as shifts in risk premia, the exchange rate moves mainly in response to the real shocks during the post-2001 crisis period. Hence, there is a sizeable role for exchange rate stabilization during this period, absorbing those shocks and therefore requiring opposed monetary policy responses.     

宏观共同因子、特质因子以及货币政策对中国各线城市房价的影响——基于FAVAR模型

运用FAVAR模型,将中国各线城市房价分离出宏观共同因子和特质因子部分,研究了各因子及货币政策对房价的影响。研究发现:大城市的房价更易受宏观共同因子和地区特质因子的影响,且变动的持续性更大;共同因子可在很大程度上解释房价变动的持续性和波动性;共同因子对房价的影响较为持久,而地区特质因子只在短期内影响房价;利率和货币供应量可以有效地影响房价;相比利率,货币供应量对一线和二线城市房价水平的影响更大,对各线城市房价波动的影响更为持久;一线城市的房价水平及其波动对货币政策冲击的敏感度较高,二线城市的敏感度居中,三线城市的敏感度较低;未发现货币政策的"价格之谜"现象,表明本文模型设定的合理性较强。     

US inflation and output since the 1970s: a P-star approach

US inflation and output developments since the 1970s are considered using the P-star model and the VAR-based Diebold–Yilmaz spillover index approach. Shocks to monetary variables explain a substantial share of US GDP deflator inflation shocks over time, particularly in the late 1980s and early 1990s but also in recent years, a time when quantitative easing was employed by the Federal Reserve. Monetary factors, and not oil shocks, underlie price developments in the 1970s and early 1980s. Monetary shocks’ influence on oil prices has become noticeably stronger over the past ten years or so, supporting the greater attention being paid of late to the impact of the monetary environment on commodity markets. Shocks to the velocity-of-money variable affect output developments, with the exception of the 1970s and early 1980s when inflation shocks and, to a lesser extent, oil inflation shocks dominate the cross-variance share of output gap shocks. After the Volcker disinflation, the influence of both inflation and oil price shocks on the output gap wane and those of velocity gap shocks increase.     

Estimating potential output for New Zealand

One of the main indicators of inflationary pressures used by the Reserve Bank of New Zealand is the output gap. An alternative to the Reserve Bank's incumbent measure of potential output is obtained using a structural vector autoregression (SVAR) methodology with long–run restrictions. The Reserve Bank's official measure of the output gap and the estimate obtained from the SVAR model tend to agree about the state of the cycle, especially during the 1970s and 1990s. However, during the 1980s, the period of economic reforms, they are more dissimilar.     

The impact of Chinese monetary policy shocks on East and South‐East Asia1

We study the effects of Chinese monetary policy shocks on China's major trading partners in East and South‐East Asia by estimating structural vector autoregressive (SVAR) models for six economies in the region. We find that a monetary expansion in Mainland China leads to an increase in real GDP (temporary) and the price level (permanent) in a number of economies in our sample, most notably in Hong Kong and the Philippines. The impact could result from intertemporal substitution present in a general equilibrium framework, which allows for positive domestic impacts of foreign monetary expansions. Our results emphasize the growing importance of China for its neighbouring economies and the significance of Chinese shocks for the design of monetary policy in Asian economies.     

油价冲击、货币政策调整与产出波动——基于中国的经验证据

本文基于我国2001-2010年宏观经济月度数据,采用SVAR模型分析了国际油价波动时,央行货币政策在排除回应油价干扰与未排除干扰下的反应差异及油价波动对产出的影响。研究发现,在排除货币政策回应油价波动干扰后,通过脉冲响应函数反映的油价波动对产出的短期负面影响消失。方差分解结果显示,长期内产出波动由油价冲击和货币政策解释的比例分别为5716%和32480%,比排除干扰前分别下降了2569%和4560%。这说明我国油价冲击带来的经济衰退主要是因为货币政策及其回应油价冲击紧缩所致。此外,面对油价的短期冲击,CPI指数并未随着生产者购进价格指数上升而上升,产出也未发生明显的衰减;但在较长时间内,油价上升会因为相对价格的改变,而影响CPI水平和货币政策,从而对产出产生显著的负面影响。