Oil shocks and the zero bound on nominal interest rates

Beginning in 2008, in many advanced economies, policy rates reached their zero lower bound (ZLB) and almost at the same time, oil prices started rising again. We analyze how the ZLB affects the propagation of oil shocks. As these shocks move inflation and output in opposite directions, their effects on economic activity are cushioned when monetary policy is constrained. The burst of inflation from an oil price increase lowers real interest rates at the ZLB and stimulates the interest-sensitive component of GDP, offsetting the usual contractionary effects. We show that the mitigation of the output decline from the zero lower bound depends on the source of the shock and on the persistence that alternative shocks induce in the price of oil.     

数量规则还是利率规则？——我国转型时期量价混合型货币规则的理论基础

本文对我国货币政策转型时期兼顾数量和价格的货币政策调控实践进行了深入的分析。在货币数量论和货币效用模型的基础上,从理论上阐明了货币数量规则与利率价格规则的等价关系,并构建了符合中国货币政策实践的数量与价格混合型货币政策规则。这对于更好地理解我国货币政策转型时期的量价混合型货币政策操作具有重要的理论和现实意义。相关推论表明,正是由于数量和价格混合型货币规则,在利率低于均衡水平的情形下,中国的货币增速并未引发恶性通胀;修正的物价稳定泰勒原理表明,利率调整幅度小于通胀变化仍能够实现物价稳定。对中国的经验分析支持了理论和推论结果。在利率市场化基本完成和流动性格局逆转的当下,货币政策价格调控方式转型的必要性和迫切性日益上升,转型的条件日趋成熟。     

我国货币政策传导机制及盯住目标选择

本文通过建立结构向量自回归模型,分析了货币政策不同盯住目标与最终目标之间的作用关系和扰动响应,对货币政策数量、价格两种传导机制的有效性进行了比较。从实证结果看,中央银行选择盯住货币供应量具有相对合理性。中央银行应继续完善货币政策体系,疏通货币政策传导渠道,更好地实施以货币供应量为盯住目标的数量调控。     

数量规则还是利率规则？——我国转型时期量价混合型货币规则的理论基础

本文对我国货币政策转型时期兼顾数量和价格的货币政策调控实践进行了深入的分析。在货币数量论和货币效用模型的基础上,从理论上阐明了货币数量规则与利率价格规则的等价关系,并构建了符合中国货币政策实践的数量与价格混合型货币政策规则。这对于更好地理解我国货币政策转型时期的量价混合型货币政策操作具有重要的理论和现实意义。相关推论表明,正是由于数量和价格混合型货币规则,在利率低于均衡水平的情形下,中国的货币增速并未引发恶性通胀;修正的物价稳定泰勒原理表明,利率调整幅度小于通胀变化仍能够实现物价稳定。对中国的经验分析支持了理论和推论结果。在利率市场化基本完成和流动性格局逆转的当下,货币政策价格调控方式转型的必要性和迫切性日益上升,转型的条件日趋成熟。     

Fiscal Policy in a Currency Union at the Zero Lower Bound

This paper constructs a two‐country core–periphery New Keynesian model of a currency union to address the interaction between the objectives of regionally directed fiscal policy constrained by a single currency and the aggregate use of fiscal policy in face of the zero lower bound (ZLB) on policy interest rates. We identify an optimal path of aggregate and relative fiscal policy responses to a negative region‐specific demand shock. Our results show that (i) in a monetary union, the optimal policy response to an asymmetric reduction in demand concentrated in the periphery always entails a relative shift of fiscal expenditure toward the worse‐affected regions, (ii) though no aggregate fiscal response is required outside the ZLB, and (iii) optimal union‐wide fiscal policy is expansionary at the ZLB. Therefore, optimal policy always entails an expansion in the periphery at the ZLB, but the optimal fiscal response in the core regions can be either expansionary or contractionary depending on the parameters of the model. However, (iv) fiscal expansion in the core is warranted if the periphery cannot implement an expansion due to constraints on public spending.     

Aggregate and welfare effects of redistribution of wealth under inflation and price-level targeting

An unanticipated rise in the price level redistributes wealth from lenders to borrowers. Its size depends on the monetary policy regime, as inflation targeting (IT) and price-level targeting (PT) have different implications for the price-level path following price-level movements. The effects of an unexpected 1% price-level increase are measured and assessed under both regimes. Overall, the redistribution of wealth and the implied aggregate and welfare effects are larger under IT than they are under PT. The youngest, the poorest, and the government gain at the expense of the rest of the population and, when the government gain is given to households as lump-sum transfers, the effects on GDP are negative and long-lasting.     

Equity market and the transmission channels of monetary policy: Before and after the zero lower bound

We examine the effectiveness of the interest rate channel and the credit channel of monetary policy before and after the zero lower bound (ZLB), using intraday stock returns. We construct a number of industry-specific and firm-specific indicators to capture the sensitivity of firms' demand to interest rates (interest rate channel) and firms' financial constraints (credit channel). We find that the transmission of monetary policy has shifted across both periods. Conventional monetary policy works through both the neoclassical interest rate channel and the credit channel, while unconventional policy is propagated primarily via the credit channel which became even more effective at the ZLB. Before the ZLB the transmission channels operate primarily through target rate shocks rather than forward guidance announcements, whereas both forward guidance and large scale asset purchases were equally important for the credit channel at the ZLB. We also find strong evidence that transmission channels are asymmetric depending on the state of the stock market (bull/bear, tighter/easier credit conditions, high/low volatility), and the type of policy surprises (positive/negative). Our findings are robust with respect to a number of model extensions and alternative specifications.     

Monetary policy and distribution

A segmented markets model of monetary policy is constructed, in which a novel feature is goods market segmentation, and its relationship to conventional asset market segmentation. The implications of the model for the response of prices, interest rates, consumption, labor supply, and output to monetary policy are determined. As well, optimal monetary policy is studied, as are the costs of inflation. The model features persistent nonneutralities of money, relative price effects of increases in the money supply, persistent liquidity effects, and a negative Fisher effect from a money supply increase. A Friedman rule is in general suboptimal.     

物价与货币政策调控最优契合的实证研究

本文从货币渠道和信贷渠道对物价与货币政策的关系进行实证检验。结果表明,货币政策与物价水平之间存在稳定的均衡关系,但是货币政策存在滞后性,货币供应量M2的滞后期约为2个月,金融机构各项贷款规模的滞后期约为4个月,并基于此对货币政策调控提出相关建议。     

The effect of monetary policy on real estate price growth in China

Using quarterly data from 1998:Q1 to 2009:Q4 and monthly data from July 2005 to February 2010, this paper examines the impact of key monetary policy variables, including long-term benchmark bank loan rate, money supply growth, and mortgage credit policy indicator, on the real estate price growth dynamics in China. Empirical results consistently demonstrate that expansionary monetary policy tends to accelerate the subsequent home price growth, while restrictive monetary policy tends to decelerate the subsequent home price growth. These results suggest that Chinese monetary policy actions are the key driving forces behind the change of real estate price growth in China. We also show that hot money flow does not have a significant impact on the change of home price growth after controlling for the money supply growth. Finally, a bullish stock market tends to accelerate subsequent home price growth.     

Model Uncertainty and Delegation: A Case for Friedman's k-Percent Money Growth Rule?

Model uncertainty affects the monetary policy delegation problem. If there is uncertainty with regards to the determination of the delegated objective variables, the central bank will want robustness against potential model misspecifications. We show that with plausible degree of model uncertainty, delegation of the Friedman rule of increasing the money stock by k percent to the central bank will outperform commitment to the social loss function (flexible inflation targeting). The reason is that the price paid for robustness under flexible inflation targeting outweighs the inefficiency of money growth targeting. Imperfect control of money growth does not change this conclusion.     

The effect of monetary policy on real estate price growth in China

Using quarterly data from 1998:Q1 to 2009:Q4 and monthly data from July 2005 to February 2010, this paper examines the impact of key monetary policy variables, including long-term benchmark bank loan rate, money supply growth, and mortgage credit policy indicator, on the real estate price growth dynamics in China. Empirical results consistently demonstrate that expansionary monetary policy tends to accelerate the subsequent home price growth, while restrictive monetary policy tends to decelerate the subsequent home price growth. These results suggest that Chinese monetary policy actions are the key driving forces behind the change of real estate price growth in China. We also show that hot money flow does not have a significant impact on the change of home price growth after controlling for the money supply growth. Finally, a bullish stock market tends to accelerate subsequent home price growth.     

Monetary Policy Expectations at the Zero Lower Bound

We show that conventional dynamic term structure models (DTSMs) estimated on recent U.S. data severely violate the zero lower bound (ZLB) on nominal interest rates and deliver poor forecasts of future short rates. In contrast, shadow‐rate DTSMs account for the ZLB by construction, capture the resulting distributional asymmetry of future short rates, and achieve good forecast performance. These models provide more accurate estimates of the most likely path for future monetary policy—including the timing of policy liftoff from the ZLB and the pace of subsequent policy tightening. We also demonstrate the benefits of including macroeconomic factors in a shadow‐rate DTSM when yields are constrained near the ZLB.     

World food prices and monetary policy

How should monetary policy respond to large fluctuations in world food prices? We study this question in an open economy model in which imported food has a larger weight in domestic consumption than abroad and international risk sharing can be imperfect. A key novelty is that the real exchange rate and the terms of trade can move in opposite directions in response to world food price shocks. This exacerbates the policy trade-off between stabilizing output prices vis a vis the real exchange rate, to an extent that depends on risk sharing and the price elasticity of exports. We characterize implications for dynamics, optimal monetary policy, and the relative performance of practical monetary rules. While CPI targeting and expected CPI targeting can dominate PPI targeting if international risk sharing is perfect, even seemingly mild departures from the latter make PPI targeting a winner.     

货币政策目标、资产价格波动与最优货币政策

货币政策目标的实现程度是判定货币政策优劣的标准。通过建立中央银行的决策模型,推导出忽略和考虑资产价格的最优货币供应量反应函数,并据此对中国不同货币政策目标下的宏观经济运行进行模拟,以认识货币政策目标对资产价格波动与最优货币政策之间关系的影响,结果表明最优货币政策是否应该对资产价格的波动反应取决于货币政策目标。因此,应充分重视货币政策目标的取向,同时加强对最优货币政策目标确定的研究。     

中国货币政策理论有效性的实证分析

货币政策理论有效性问题是货币政策有效性争论的核心内容之一.本文采用协整检验和误差修正模型,以货币供应量、贷款利率和外汇储备衡量的货币政策对以国内生产总值、就业水平和物价水平衡量的宏观经济变量进行实证分析,结果表明了中国货币政策的理论有效性.     

中国货币供给与价格变动的实证分析

本文在回顾各个学派货币供给理论的基础上,综合分析了货币供给对于物价变动水平的影响.利用中国2001-2010年的经验数据,并通过格兰杰因果检验和Pearson、Spearman、Kendall相关性分析发现,货币供给对于价格水平有一定的助推作用,但对资产价格影响甚微.进一步的分析则表明,我国的货币政策对调节价格水平有一定的时效性,而且价格的调控难度也在逐渐增大.     

The behavior of money and other economic variables: Two natural experiments

The object of this paper is to test the performance of the quantity-theory model and the related proposition of monetary neutrality in a context in which, to use Bernanke's phraseology, “money move[d] for reasons that [were] plausibly unrelated to the current state of the economy.” We investigate this question using data from two recent episodes of monetary-policy regime change – the move to floating exchange rates throughout the industrialized world following the breakdown of Bretton Woods in the early 1970s and the shift toward less expansive monetary policy that to varying degrees took place in these countries a decade or so later. The results of this exercise are highly positive. The money–price relationship that we observe is fully consistent with theory – growth shifts in the nominal stock of money and in the price level are highly correlated and bear a one-to-one relation to one another. Growth shifts in exchange rates are significantly related both to growth shifts in relative price levels and to growth shifts in relative excess supplies of money. The classical neutrality proposition – in this context superneutrality – in general, receives strong, though not totally unambiguous, support.     

通货膨胀、货币供给与房地产市场关系的实证研究——基于后危机时代数据的考察

我国在2009年底推出的经济政策导致房价和物价不断攀升,央行虽然采取紧缩措施进行应对,但物价和房价仍处高位。对我国货币供给、通货膨胀及房地产之间关系进行理论和实证分析的结果显示:货币供给增加能引起物价和房价上涨;房价上涨能引起物价上涨等。因此,为了更好地应对物价波动,货币政策需关注资产价格,同时应谨慎使用货币政策应对资产泡沫,并密切注意货币流动结构,维持货币供给流向与实体经济发展相适应。