信贷差异、内需扩张与通胀变化的关联度

实施应对金融危机的一揽子措施以来,各口径货币总量对CPI的预测能力明显下降,CPI回升速度显著低于依据历史经验测算出的货币增长对物价形成的压力。这一现象主要与货币供给结构变化有关。从信贷增长与内需在GDP增长中贡献度的关系来看,扩张性政策导致的信贷高增长并未明显超出内需扩张之所需,加之经济增长也并未超出其潜在水平,因此短期内没有产生明显的CPI通胀压力,但经济回升和货币信贷增长推升了通胀预期。鉴于通胀机理所发生的变化,宏观政策需要更多关注更广泛意义上的整体价格水平稳定,更多关注预期和环比数据变化以提高调控的前瞻性和有效性,同时要加强宏观审慎管理,多运用市场化和有弹性的政策工具实施调控。     

Sources of Real Exchange Rate Volatility in Africa: The Case of ECOWAS*

Abstract: This study examines the impact of (real) demand shocks, (aggregate) supply shocks, and monetary shocks on real exchange rates in 13 West African countries. We observe that the real demand shocks explain most of the fluctuations in real exchange rates in all these countries. Accordingly, policymakers should adopt a careful demand management strategy by controlling government expenditure and taxes.     

Deflation,Productivity Shocks and Gold: Evidence from the 1880–1914 Period

In this paper we examine the sources and impact of deflation on the growth experiences of the four dominant countries on the gold standard in the period 1880–1913: the United States, The United Kingdom, France and Germany. We distinguish between good deflation, (driven by positive aggregate supply shocks) and bad deflation (driven by aggregate demand shocks). We use an empirical Blanchard/Quah model which decomposes the behaviour of prices, output and the money stock into the impact of shocks such as a world price level shock, a domestic supply shock, and domestic demand shocks including a shock to the domestic gold stock. Our key finding is that the European economies were essentially classic in the sense that output was mainly supply driven and that money was neutral even when country specific gold stocks are included. In the United States, however, we observe both good and bad deflation.     

Permanent and Temporary Components of Stock Prices: Evidence from Assessing Macroeconomic Shocks

This paper outlines a simple macro model with overlapping wage contracts to investigate how the temporary and permanent components of stock price movements may be related to aggregate macro-economic supply and demand disturbances. In the content of the model, we show that aggregate demand shocks have only temporary effects on real stock prices, while supply shocks may affect the level of real stock prices permanently. Moreover, the temporary component in U.S. stock prices, identified by placing appropriate structural restrictions on a vector autoregressive system estimated for the postwar period, is statistically significant. This evidence supports the mean-reversion hypothesis that stock prices are not pure random walks. The finding is robust to the choice of variables used in the vector autoregressive system and periodicity.     

Variation in the Effects of Aggregate Demand Shocks: Evidence and Implications across Industrial Countries

Over a sample of nineteen industrial countries, more variable aggregate demand and/or higher mean inflation attenuates (augments) the effect of aggregate demand shocks on real output growth (wage and price inflation) while having no effect on the response of the real wage to such shocks. In all countries examined, aggregate demand shocks are positively (negatively) correlated with nominal variables (real output). Among explanations of the business cycle based on shocks to aggregate demand, this evidence favors the new Keynesian sticky wage explanation over the sticky price and the new classical imperfect information explanations.     

Oil Price Shocks and the Credit Default Swap Market

We investigate the impact of supply and demand shocks in the global crude oil market on the CDX spread, in the context of a structural VAR model based on monthly data, over the period from November 2003 to October 2015. We find that the reaction of the CDX spread to changes in the real price of crude oil differs considerably depending on the sources of shocks. In the long run, crude oil supply shocks, aggregate demand shocks, and oil-specific demand shocks together account for nearly 90% of the variation of the CDX spread.     

Cointegration,error correction,and the demand for money in Mexico

Cointegration, Error Correction and the Demand for Money in Mexico. -Estimates of the long-run demand for narrow and broad definitions of the Mexican money supply over the period 1980Q1–1994Q1 suggest that a single cointegrating relationship exists for real money balances (M1 and M2), a scale variable (real GDP or real consumption expenditure), and the 91-day treasury bill rate. The results from short-run dynamic equations favor M2 as the monetary aggregate to target and suggest that real GDP rather than real private consumption is a more appropriate scale variable in the demand for money function for Mexico.     

Structural Asymmetries and the Optimal Monetary Policy Instrument of the European Central Bank

Although the existence of differences in economic structure across European countries is well known, their implications for the conduct of the single monetary policy in Stage Three of EMU have not yet been analyzed. This paper explores the issue on the basis of a two-country, rational-expectations, stochastic model characterized by asymmetric structural equations and a general formulation for monetary policy. Only if financial shocks are the main source of instability can heterogeneity in structures be neglected. When real shocks to aggregate demand prevail, their geographical distribution and the difference in the elasticity of aggregate supply are the key factors governing the response to structural differences. When supply shocks predominate, irrespective of their geographical distribution monetary policy should lean against the wind with more determination than if countries were identical. Differences in the transmission lag of monetary policy or some concern for growth when pursuing price stabilization reduce the size of the correction in monetary policy called for by structural asymmetries.     

Sources of Purchasing Power Disparities between the G3 Economies

Recent theoretical and empirical research in international macroeconomics has rediscovered the problem of purchasing power parity (PPP). Empirically, PPP is a bad approximation of both the short-term and medium-term properties of the data. Economists have had difficulties in explaining the persistent misalignments of real exchange rates, but new empirical research by Clarida and Galí (1995), Carnegie Rochester Conference Series on Public Policy, Vol. 41 suggested that much of these real exchange rate movements are due to relative demand shocks. The present paper challenges this view by using an extended version of their structural vector autoregressive (SVAR) model in order to identify a larger number of real shocks (labor supply, productivity, and aggregate demand) and nominal shocks (money demand and money supply). It is found that while some of their results go through in our extended framework, there is serious doubt with respect to the appropriateness of labeling those shocks which drive real exchange rates as aggregate demand disturbances.J. Japan Int. Econ.December 1997,11(4), pp. 548–583. Universität Bonn, Lennéstrasse 43, 53113 Bonn, Germany and CEPR.     

The dynamics of aggregate demand and supply shocks in ASEAN countries

This paper revisits the issue of identification of aggregate demand and supply shocks in ASEAN countries using an alternative identification scheme where the aggregate demand and supply shocks are allowed to be correlated. Applying the technique of Cover, Enders, and Hueng (2006) within a bivariate Structural VAR model, this paper shows that aggregate demand and supply shocks are interrelated (positively) in ASEAN countries. Unlike most of the previous studies, it is found that changes in the output level are mainly driven by aggregate demand shocks, whereas supply shocks play the dominant role in affecting inflation in ASEAN countries. The correlation of the shocks across the countries is found to be quite small, suggesting that ASEAN is still not set to form a common currency union.     

Targeting Rules for an Open Economy

This study extends the formal analysis of inflation targeting monetary policy using the standard New Keynesian framework to a small open economy by adding inflation and output persistence as well as a direct exchange rate channel to domestic inflation. We find that output variability is lower under CPI inflation targeting than under domestic inflation targeting. However, CPI inflation results in higher variability of the real exchange rate than domestic inflation targeting. Output and the nominal interest rate are less volatile under flexible inflation targeting than under almost-strict inflation targeting. We also find that almost-strict domestic inflation targeting cannot completely insulate domestic inflation from foreign shocks due to a direct exchange rate channel. The model is calibrated to Canadian data.     

Effect of Money Supply on Real Output and Price in China

Over the past 30 years, China has achieved remarkable long-term economic growth. Using quarterly data, we study the effects of money supply on real output and inflation in China between 1993 and 2008. To this end, we use money supply shocks afler filtering out the expected component of the money supply. Our findings provide evidence supporting the asymmetric effect of positive and negative money supply shocks on real output and inflation in China. That is, real GDP growth in China responds to negative money supply shocks but not positive money supply shocks. In addition, inflation responds to positive money supply shocks but not negative money supply shocks. We conclude that the People＇s Bank of China＇ s policy of steady monetary growth appears to be appropriate. Our study offers important policy implications for China.     

Unemployment Dynamics, and Propagation of Aggregate and Reallocation Shocks in the Netherlands

This paper models the propagation at the macro level of four types of shocks using the SVAR approach. Time series data for the Netherlands on job creation, job destruction, the number of vacancies and labour supply are used to identify aggregate demand and supply shocks, and reallocation demand and supply shocks as different sources of unemployment dynamics. Each of these four types of shocks appears to have at least some influence on unemployment both in the short and long run. The long run influence of the aggregate labour supply shock is estimated to be very limited. It indicates that additional labour supply is almost fully absorbed by labour demand in the long run.     

Money,inflation, and output growth: Does the aggregate demand-aggregate supply model explain the international evidence?

Money, Inflation, and Output Growth: Does the Aggregate Demand-Aggregate Supply Model Explain the International Evidence? - Using annual post-war data for 32 countries, it is shown that output and the price level are positively related along the aggregate supply and negatively related along the aggregate demand curve. This implies that the negative correlation between inflation and growth simply means that the price level has been countercyclical as aggregate supply shocks domi-nated aggregate demand shocks. It is also shown that money growth has positive and permanent effects on inflation, but may affect output only in the short run: in the long run, money is probably neutral.     

Transmission of China's Shocks to the BRIS Countries

This paper investigates the effects of China on the BRIS countries, namely Brazil, Russia, India and South Africa. We identify Chinese supply and demand shocks and assess their transmission to BRIS in a structural dynamic factor model framework estimated over the period 1995Q2‐2009Q4. The findings show that Chinese supply shocks are more important than its demand shocks. Supply shocks produce positive and significant output responses in all BRIS countries. And while these supply shocks have a permanent impact on the BRIS countries, the effects of demand shocks are short‐lived. Both supply and demand shocks are transmitted through trade rather than financial linkages. However, the responses of the BRIS countries are heterogeneous and therefore require country‐specific policy responses.     

What to Aim for? The Choice of an Inflation Objective when Openness Matters

Inflation targeting countries generally define the inflation objective in terms of the consumer price index. Studies in the academic literature, however, reach conflicting conclusions concerning which measure of inflation a central bank should target in a small open economy. This paper examines the properties of domestic, CPI, and real-exchange-rate-adjusted (REX) inflation targeting. In one class of open economy New Keynesian models there is an isomorphism between optimal policy in an open versus closed economy. In the type of model we consider, where the real exchange rate appears in the Phillips curve, this isomorphism breaks down; openness matters. REX inflation targeting restores the isomorphism but this may not be desirable. Instead, under domestic and CPI inflation targeting the exchange rate channel can be exploited to enhance the effects of monetary policy. Our results indicate that CPI inflation targeting delivers price stability across the three inflation objectives and will be desirable to a central bank with a high aversion to inflation instability. CPI inflation targeting also does a better job of stabilizing the real exchange rate and interest rate which is an advantage from the standpoint of financial stability. REX inflation targeting does well in achieving output stability and has an advantage if demand shocks are predominant. In general, the choice of the inflation objective affects the trade-offs between policy goals and thus policy choices and outcomes.     

SYNCHRONISATION BETWEEN SOUTH AFRICA AND THE U.S.: A STRUCTURAL DYNAMIC FACTOR ANALYSIS

This paper studies the synchronisation of the South African and the US cycles and transmission channels through which supply and demand shocks from the US affect economic activity in South Africa in a structural dynamic factor model framework. We find, using the full-sample period, US supply shocks are transmitted to South Africa through business confidence and imports of goods and services; while US demand shocks are transmitted via interest rates, stock prices, exports of goods and services, and real effective exchange rates. Second, there is a decrease in integration over time translated by a drop in synchronisation of cycles. The impact of an increase in comovement of GDP is outweighed by the structural reforms initiated by the government after the end of apartheid. Finally, the idiosyncratic component still plays an important role in the South African economy.     

Dry bulk shipping and the evolution of maritime transport costs, 1850–2020

We provide evidence on the dynamic effects of fuel price shocks, shipping demand shocks and shipping supply shocks on real dry bulk freight rates in the long run. We first analyse a new dataset on dry bulk freight rates for the period from 1850 to 2020, finding that they followed a downward but undulating path with a cumulative decline of 79%. Next, we turn to understanding the drivers of booms and busts in the dry bulk shipping industry, finding that shipping demand shocks strongly dominate all others as drivers of real dry bulk freight rates in the long run. Furthermore, while shipping demand shocks have increased in importance over time, shipping supply shocks in particular have become less relevant.     

Analysis of real GDP growth rates of greater China: An asymmetric conditional volatility approach

Most empirical studies of real gross domestic product (GDP) growth rates exclude the dimension of conditional volatility shocks. In this paper, we search for evidence of conditional volatility in the quarterly real GDP of greater China, which comprises the economies of Mainland China, the Hong Kong Special Administrative Region (SAR), and Taiwan. The widely accepted exponential GARCH model of Nelson [Econometrica 59 (1991) 347–370] is employed to capture the possible existence of asymmetric conditional volatility in real GDP. It is found that negative real GDP shocks may induce a greater impact on future volatilities compared with positive shocks of the same magnitude. Policy implications from our findings are discussed.     

A history of aggregate demand and supply shocks for the United Kingdom, 1900 to 2016

This paper presents a history of aggregate demand and supply shocks spanning 1900 – 2016 for the United Kingdom. Sign restrictions derived from a workhorse Keynesian model are used to identify the signs of those shocks. We compare the 30 largest shocks implied by a vector autoregressive model in unemployment and inflation with the narrative historical record. Our approach provides a new perspective on well-known events in economic history. We highlight two episodes of particular interest: an aggregate supply shock in the late 1920s, which we attribute to changes in the bargaining power of labor, and positive aggregate demand shocks in the mid-1970s, which we attribute to fiscal policy.