我国货币中性的实证研究

国际金融危机爆发以来,降低利率、增加流通中货币成了各国政府解决金融危机的共同做法,货币对于经济的积极作用再次引起人们的关注。过于宽松的货币政策能持续多久,会不会造成严重的通货膨胀,进而破坏经济的健康发展,也同样引起人们的关注。本文对我国1978-2009年的流通中货币、利率、物价指数对GDP的影响进行了实证研究,结果表明流通中货币不是实际GDP增长的格兰杰原因,货币是中性的;GDP的实际增长率是实际利率的格兰杰原因,名义利率和GDP没有因果关系;GDP和物价指数没有格兰杰因果关系,通货膨胀不能促进经济的增长。     

Balance of payments crises under inflation targeting

This paper analyzes a small open economy model under inflation targeting. It shows why such a monetary regime is vulnerable to speculative attacks that take place over a short period rather than instantaneously. The speed at which the regime collapses, and the extent of reserve losses, are increasing in the central bank's explicit or implicit commitment to intervene in the foreign exchange market. Attacks are therefore ranked, from most to least severe, as follows: Exchange rate targeting, CPI inflation targeting, domestic nontradables inflation targeting, and money targeting. Under inflation targeting the size of the attack is increasing in the tradables consumption share.     

Managed floating as a strategy to achieve selected monetary policy objectives

The paper considers the connection between exchange rate regimes and economic performance as measured by inflation, output growth, and their volatility. It is argued first that the choice of an intermediate exchange rate regime is complicated by potential conflicts with the requirements of central bank transparency and accountability. These are considered to be longer run questions. Next, three types of managed floating regimes are defined. A variety of counterfactual experiments are shown to illustrate that a managed float, such that the objective of monetary policy is expressed in terms of an inflation target, will produce the most desirable macroeconomic outcome. The counterfactuals are supplemented with estimates of forward-looking Taylor rules to ascertain whether such rules are informative under a managed floating scenario. In general, the answer is that central bank reaction functions become less useful when the exchange rate regime is an intermediate one.     

An Empirical Analysis of the Determinants of Interest Rates in Ghana

ABSTRACT

This paper provides an empirical analysis of the determinants of the bank lending rate in Ghana using annual time series data from 1970 to 2013. We found evidence of a long-run equilibrium relationship between the average lending rate charged by commercial banks and its determining factors. In the long run, bank lending rates in Ghana are positively influenced by nominal exchange rates and Bank of Ghana’s monetary policy rate but negatively with fiscal deficit, real GDP and inflation. We also find positive dependence of the bank lending rate on exchange rates, and the monetary policy rate both in the short and long run. Specifically, our findings reveal that the Bank of Ghana’s monetary policy rate and the exchange rate, by far, show strong contemporaneous effects on the average bank lending rate in Ghana.     

Dove or Hawk? Characterizing monetary policy regime switches in India

The past two decades have witnessed a worldwide move by emerging markets to adopt explicit or implicit inflation targeting regimes. A notable and often discussed exception to this trend, of course, is China which follows a pegged exchange rate regime supported by capital controls. Another major exception is India. It is not clear how to characterize the monetary regime or identify the nominal monetary anchor in India. Is central bank policy in India following a predictable rule that is heavily influenced by a quasi inflation target? And how has the monetary regime been affected by the gradual process of financial liberalization in India? To address these points, we investigate monetary policy regime change in India using a Markov switching model to estimate a time-varying Taylor-type rule for the Reserve Bank of India. We find that the conduct of monetary policy over the last two decades can be characterized by two regimes, which we term ‘Hawk’ and ‘Dove.’ In the first of these two regimes, the central bank reveals a greater relative (though not absolute) weight on controlling inflation vis-à-vis narrowing the output gap. The central bank however was found to be in the “Dove” regime about half of our sample period, focusing more on the output gap and exchange rate targets to stimulate exports, rather than moderating inflation. India thus seems to be following its own direction in the conduct of monetary policy, seemingly not overly influenced by the emphasis on quasi-inflation targeting seen in many emerging markets.     

基于SVAR模型分析居民消费价格指数的外部冲击因素

持续高位的居民消费价格指数(以下简称CPI)使得货币与财政政策制定当局面临着很大的压力,而造成CPI高位运行的外部性因素更是给政策调控带来了很多不确定性。对于诸如人民币汇率变动、外汇储备变动以及国际市场大宗商品价格(以下简称CRBI)变动对国内通货膨胀冲击,采用结构变量自回归模型(SVAR)对CPI的外部性冲击因素进行分析,结果显示在短期内CRBI对CPI有一定的输入性影响,汇率变动有一定程度抑制作用,但长期这种作用会发生逆转;外汇储备的变动主要作用于国内货币供给,对CPI产生非常显著的正向冲击。     

Monetary Dynamics of Inflation in China

This paper investigates both the short‐run and the long‐run relationships between monetary growth and inflation in China between 1980 and 2010. We construct multivariate dynamic models based on Friedman’s quantity theory of money (but permitting money to be endogenous) and Meltzer’s monetarist model. The empirical results provide robust evidence that there is a bilateral causal relationship between monetary growth and inflation as well as between monetary growth and output growth. An indirect and implicit causal relationship between monetary growth and inflation is found through the asset inflation channel. There are also long‐run equilibrium relationships between money stock, price index and other relevant variables. The present paper further provides a historical exploration of the mechanism of the monetary dynamics of inflation in China over the underlying period. We conclude that the monetary growth rule is likely to be the most promising policy orientation for China to manage its inflation.     

地方政府财政支出对中国通货膨胀的冲击效应研究——基于凯恩斯 AD - AS 视角

基于国家干预的凯恩斯 AD - AS 视角,主要对财政货币政策与通货膨胀之间的关系进行研究,并采用 1952—2010 年中国宏观经济数据进行实证分析,结果表明: ( 1) 长期内,地方财政支出的扩张是导致通货膨胀的关键性因素; 而中央财政支出的扩张却有利于控制通货膨胀; 不同层次的货币供应量对通货膨胀的冲击则并不显著; 除此之外,通货膨胀还受到消费者预期、人民币汇率、职工工资水平和原材料购进价格的正向影响。(2) 短期内,无论是中央抑或是地方财政支出都能对通货膨胀产生负向的冲击作用; 然而,货币供应量( M0、M1、M2) 却对通货膨胀起到了明显的助推作用,且 M0与通货膨胀具有双向的 Granger 因果关系。( 3) 新时期,财政货币当局不仅需要高度关注高通胀惯性对政策效果的影响,尤其应注重财政货币政策的多重目标分解、梳理及协调配合,而且要处理好反通胀、保增长、调结构之间困难而复杂的关系,寻求三者之间的有效"平衡点"。     

Exchange rate versus inflation targeting: a theory of output fluctuations in traded and non-traded sectors

This paper develops a basic model for output fluctuations in traded and non-traded sectors under two alternative monetary policy regimes; exchange rate targeting (or monetary union) and inflation targeting. The conventional wisdom from one-sector models says that inflation targeting gives better output stabilization than exchange rate targeting when demand shocks occur, but the opposite when supply shocks occur. In a model with a traded and a non-traded sector, we show that the conventional wisdom holds for the non-traded sector. However, for the traded sector, we show that inflation targeting destabilizes output compared with exchange rate targeting when both supply and demand shocks occur. The only shocks where inflation targeting provides the better output stability for the traded sector are shocks to world market prices. The two-sector structure introduces new mechanisms that may turn around earlier results for aggregate production. For instance, a demand shock may induce higher aggregate output fluctuations with inflation targeting than with exchange rate targeting. Furthermore, a positive demand shock may prove to be contractionary under inflation targeting.     

股票市场开放条件下的货币政策效应分析

本文探讨了在股票市场开放条件下,股票市场的国际资本流动对货币政策的影响。在开放经济条件下,对在东道国投资的国际投资者来说,如果股票投资比债券投资更重要,那么货币政策比财政政策相对有效的观点难以成立。扩张性货币政策使国内利率下降,但利率下降会增加股票投资的预期收益,这会吸引国际资本流入,从而导致本币升值,因而扩张性货币政策对产出的净影响是不确定的。浮动汇率体制有利于减缓外部冲击。     

The impact of parallel market exchange rate volatility and oil exports on real GDP in Syria: Evidence from the ARDL approach

This paper investigates the impact of parallel market exchange rate volatility and trade on real GDP and real GDP growth in the Syrian economy over the period of 1990Q1–2010Q4. To this end, we first construct a parallel market exchange rate volatility indicator. Second, we estimate an autoregressive distributed lag (ARDL) model where we include our indicator of volatility among the main determinants of real GDP. Our findings imply that real GDP can be explained by three main variables: parallel market exchange rate, money supply, and oil exports. The long-run equilibrium reveals that parallel market exchange rate volatility has a negative impact on real GDP compared to the positive impact of money supply and oil exports. In contrast, the short-run impact of parallel market exchange rate volatility on real GDP growth is positive and very small counter to the long-run impact. Furthermore, the coefficient of the error correction term of the estimated ARDL model indicates that real GDP deviation from the equilibrium level will be corrected by about 10% after each quarter.     

不完全汇率传递下的货币政策工具规则分析

本文尝试构建一个开放条件下的总供给-总需求模型,通过名义进口价格刚性在模型中引入汇率传递因素。模型对各种货币政策工具规则下社会福利损失函数进行比较,考察在不同的汇率传递程度下的各种货币政策工具规则。研究结果显示,社会福利水平随着汇率传递程度下降而提高;货币政策工具规则对消费者物价指数(CPI)上涨作出反应一定程度上优于对国内制造商品价格上涨作出反应,制定的货币政策工具规则应该以CPI为目标,以使社会福利损失最小。     

小型开放经济环境下的最优货币政策设计

在经典的小型开放经济框架内,植入一个现金预留(CIA)模型,研究多重冲击下小型开放经济的最优货币政策设计问题,结果显示:汇率波动、货币流通速度冲击、财政冲击以及家庭消费冲击等通过成本渠道对物价和产出产生了直接影响。因此,在为小型开放经济体制定货币政策时,货币当局应充分考虑这些因素,使货币政策调控不仅对产出和通货膨胀的波动做出反应,而且对汇率波动和上述冲击也应做出适当的调整。此外,为营造有利的货币政策实施环境,外汇市场应实行有管理的浮动汇率制度。     

Monetary policy and welfare in a small open economy

This paper analyzes optimal monetary policy in a small open economy featuring monopolistic competition and nominal rigidities. It shows that the utility-based loss function for this economy can be written as a quadratic expression of domestic inflation, output gap and real exchange rate. The presence of an internal monopolistic distortion and a terms of trade externality drives optimal policy away from domestic inflation targeting and affects the optimal level of exchange rate volatility. When domestic and foreign goods are close substitutes for each other, the optimal policy rule implies lower real exchange rate volatility than a domestic inflation targeting regime. The reverse is true when the elasticity of substitution between goods is low.     

Money,Inflation and Output in Nigeria and South Africa: Could Friedman and Schwartz Be Right?

ABSTRACT

This study examines the non-linear relationship between money, inflation and output with respect to the Friedman and Schwartz hypotheses that monetary policy affects prices in the long-run but not in the short-run, and influences output in the short-run but not in the long-run. The study examines the case of Nigeria and South Africa for the period 1970–2016 using the ARDL approach. The study proved that Friedman and Schwartz were right that money growth influences output in the short-run and not in the long-run. This suggests monetary policy is neutral in the long-run; however, the findings of this study cast some doubts on their popular view that money growth affect prices in the long-run but not in the short-run. This study shows that money growth actually affects prices both in the short and long-run. Thus, it is only the long-run dimension of the second hypothesis that is valid; the short-run view of the hypothesis is invalid for both Nigeria and South Africa. In fact, the significant estimates of money growth on inflation in both countries prove that inflation is everywhere a monetary phenomenon (both in the short and long run).     

差异性消费需求——巴拉萨—萨缪尔森模型的一个扩展

巴拉萨-萨缪尔森效应指出,一国在长期的经济增长过程中实际汇率会出现升值。2005年7月21日人民币汇率改革以来,人民币兑美元汇率呈现出单边升值的趋势,且目前人们对人民币汇率形成了强烈的升值预期。因此,运用巴拉萨-萨缪尔森效应研究人民币实际汇率具有一定的借鉴意义。鉴于传统巴拉萨-萨缪尔森效应的分析仅限于供给层面,文章引入了差异性消费需求这一假设条件,在不改变原模型核心假设的基础上,从供需双方面进行了拓展分析,并得出了更加符合现实意义的结论。此外,文章利用中美两国1990～2007年的数据,进行了实证分析。实证结果显示,改进后的模型显著增强了对人民币实际汇率的解释力。     

货币供给冲击、货币需求冲击与中国宏观经济波动

基于由贝叶斯技术估计的新凯恩斯动态随机一般均衡(DSGE)模型,识别和分析货币供给与货币需求冲击对产出和通货膨胀波动的影响,结果表明:货币供给冲击对产出和通货膨胀波动均能够产生同向影响,但对产出波动的影响不明显,仅能解释其不足2%的波动,而对通货膨胀波动的影响比较强,长期内可以解释其26%以上的波动;货币需求冲击对产出和通货膨胀波动的影响都不明显,长期内对二者波动的解释能力均低于0.6%。因此,在应对通胀压力时,央行可以运用数量型货币政策工具,对高通胀势头实施积极的紧缩性宏观调控。     

Inflation and Output Growth Dynamics in South Africa: Evidence from the Markov Switching Vector Autoregressive Model

This paper introduces the possibility of asymmetry in the reaction of output growth to inflation shocks in South Africa by making use of the Markov-switching vector autoregressive model. Using quarterly data from 1969Q1 to 2013Q4, the empirical finding suggests that the reaction of output growth to inflation shocks is not only regime dependent but is also contingent on how the monetary authority reacts to such shocks. Two important regimes are identified; the high and low inflation volatility regimes. Consistent with the signal extraction theory, the output effect of inflation shocks is found to be significantly lower in the high inflation volatility regime compared to the low inflation regime.     

On Decreasing Marginal Impatience,Stability and Monetary Policy in a Sidrauskian Economy

This paper analyzes the long‐run dynamics with which decreasing marginal impatience (DMI) is consistent with a saddle‐path equilibrium in a Sidrauskian economy. With exogenous growth, this occurs with a strong substitutability between capital and money. Otherwise, diminishing returns to capital have to be stronger than in a nonmonetary setting if capital and money are complements. With endogenous growth, saddle‐path stability ensues when the rate of time preference—the rate at which “impatience” is increasing—exceeds the rate at which the real economy is growing along a balanced growth path. Two monetary implications also emerge. One, DMI can be consistent with both a negative and positive long‐run inflation‐growth nexus. Two, under capital‐money substitutability, the Friedman optimal rule might even fail to hold.     

ARE LONG‐RUN PRICE STABILITY AND SHORT‐RUN OUTPUT STABILIZATION ALL THAT MONETARY POLICY CAN AIM FOR?

A central tenet of the so‐called new consensus view in macroeconomics is that there is no long‐run trade‐off between inflation and unemployment. The main policy implication of this principle is that all monetary policy can aim for is (modest) short‐run output stabilization and long‐run price stability, i.e. monetary policy is neutral with respect to output and employment in the long run. However, research on the different sources of path dependency in the economy suggests that persistent but nevertheless transitory changes in aggregate demand may have a permanent effect on output and employment. If this is the case, then, the way monetary policy is run does have long‐run effects on real variables. This paper provides an overview of this research and explores conceptually how monetary policy should be implemented once these long‐run effects are acknowledged.