中国是否存在货币政策非对称性?——基于当前货币政策无效性的探讨

美国金融危机爆发以来,中国经济受到负面影响,为了改善经济不断下行的局面,中国实施宽松的货币政策。在传统的西方货币政策非对称性理论中,扩张性货币政策在经济萧条的流动性陷阱中无效,但是,由于金融体系和货币体系的百年发展,流动性陷阱的条件已经改变。本文通过理论和实证分析论证了由于中国货币政策传导渠道和传导环境的特殊性,当前扩张性货币政策对实体经济有明显的拉动作用。     

“Interest Rate Trap”, or Why Does the Central Bank Keep the Policy Rate Too Low for Too Long?

In this paper, we provide a framework for modeling one risk‐taking channel of monetary policy, the mechanism whereby financial intermediaries' incentives for liquidity transformation are affected by the central bank's reaction to a financial crisis. The anticipation of the central bank's reaction to liquidity stress gives banks incentives to invest in excessive liquidity transformation, triggering an “interest rate trap” – the economy will remain stuck in a long‐lasting period of suboptimal, low interest rate equilibrium. We demonstrate that interest rate policy as a financial stabilizer is dynamically inconsistent, and the constrained efficient outcome can be implemented by imposing ex ante liquidity requirements.     

Capital Controls,Global Liquidity Traps,and the International Policy Trilemma*

The zero bound on interest rates introduces a new dimension to the trilemma in international policy. The openness of the international financial market might render monetary policy ineffective, even within a system of fully flexible exchange rates, because shocks that lead to a liquidity trap in one country are propagated through financial markets to other countries. However, the effectiveness of monetary policy can be restored by the imposition of capital controls. We derive the optimal response of monetary policy to a global liquidity trap in the presence of capital controls. We show that, even though capital controls might facilitate effective monetary policy, capital controls are not generally desirable in terms of welfare.     

Nominal uniqueness and money non-neutrality in the limit-price exchange process

We define continuous-time dynamics for exchange economies with fiat money. Traders have locally rational expectations, face a cash-in-advance constraint, and continuously adjust their short-run dominant strategy in a monetary strategic market game involving a double-auction with limit-price orders. Money has a positive value except on optimal rest-points where it becomes a ??veil?? and trade vanishes. Typically, there is a piecewise globally unique trade-and-price curve both in real and in nominal variables. Money is not neutral, either in the short-run or long-run and a localized version of the quantity theory of money holds in the short-run. An optimal money growth rate is derived, which enables monetary trade curves to converge towards Pareto optimal rest-points. Below this growth rate, the economy enters a (sub- optimal) liquidity trap where monetary policy is ineffective; above this threshold inflation rises. Finally, market liquidity, measured through the speed of real trades, can be linked to gains-to-trade, households?? expectations, and the quantity of circulating money.     

THE LIQUIDITY TRAP,THE REAL BALANCE EFFECT,AND THE FRIEDMAN RULE*

This article studies the behavior of the economy and the efficacy of monetary policy under zero nominal interest rates using a model with population growth that nests, as a special case, the conventional specification in which there is a single infinitely lived representative agent. The article shows that with a growing population, monetary policy has distributional consequences that give rise to a real balance effect, thereby eliminating the liquidity trap. These same distributional effects, however, can also work to make many agents much worse off under zero nominal interest rates than they are when the nominal interest rate is positive.     

Peril of the Inflation Exit Condition

Recent empirical evidence on monetary policy in Japan suggests that exits from the zero‐interest‐rate policy triggered by policy shocks can be expansionary. This paper provides theoretical examples of such expansionary policy‐induced exits. The examples suggest that the exit condition (the Bank of Japan’s stated commitment of not exiting from the zero‐rate regime unless the inflation rate rises above a certain threshold) may have made it difficult for the economy to escape from the liquidity trap.     

Bank liquidity risk and monetary policy. Empirical evidence on the impact of Basel III liquidity standards

We extend the literature on the bank lending channel in two aspects. First, rather than following the literature by analyzing the impact of banks’ liquidity (measured via their asset portfolio) on monetary policy transmission, we study the role of banks’ actual liquidity risk, as measured by the Basel III liquidity regulations. Second, we investigate the effect of complying with the Basel III liquidity standards on monetary policy transmission. We use highly detailed bank-level data from Luxembourg for the period 2003q1--2010q4. Our findings are that monetary policy transmission works its way through small banks that also have a large maturity mismatch, as measured by the Net Stable Funding Ratio. In contrast, large banks with a small maturity mismatch increase their lending following a monetary policy shock, which confirms existing results that Luxembourg’s banks are liquidity providers to the European market. Based upon in-sample predictions and upon simulated data from an optimization model that takes the banks’ business models into account, we conclude that the bank lending channel will no longer be effective once banks adhere to the new Basel III liquidity regulations.     

The Macroeconomics of Financial Crises: How Risk Premiums and Liquidity Traps Affect Policy Options

The paper offers an overview of what structural models of the IS-LM and Mundell-Fleming variety can tell about the macroeconomics of economic crises. In addition to demonstrating how the emergence of risk premiums in money and capital markets can generate liquidity traps at positive interest rates and may drive economies into recessions, it shows the following: (1) Fiscal policy works even in a small, open economy under flexible exchange rates when the country is stuck in a liquidity trap; (2) Near the fringe of liquidity traps, there may be perfect traps, in which neither monetary nor fiscal policy works when used in isolation but policy coordination is called for; and (3) Massive financial crises in the domestic money market may even destabilize the economy.     

Bank-lending channel and non-financial firms: evidence for Spain

During the 1990s, liquidity was relatively abundant in the European Union and the European central banks mostly developed a relaxed monetary policy. While the bank lending channel view of the monetary policy would have suggested an increase in loans to firms in this context, the demand for bank corporate lending, however, slowed down, suggesting that monetary policy was not effective in this area. This article analyses how the financing behaviour of Spanish firms during 1992–2003 is related to their liquidity holdings and how this relationship may affect the effectiveness of the bank lending channel. The empirical evidence provided suggests that firms holding high liquid assets may replace bank lending by other sources of financing. Hence, higher liquidity holdings allow firms to invest in attractive investment projects in the event of a tightening of monetary conditions.      

Monetary Policy in a Very Open Economy: Some Major Analytical Issues

This paper develops three considerations relevant to the possibility of modification of the Hong Kong currency board system for conducting monetary/exchange‐rate policy. The first concerns the system employed by Singapore, an economy similar in several ways to Hong Kong's, whereby the exchange rate is adjusted periodically in activist response to inflation and output developments. The second concerns a generalization, one that calls for adjustments of a weighted average of exchange rate and interest rate instruments, so designed to be effective whether the economy is, or is not, in a liquidity‐trap situation. Finally, the third topic concerns political‐economy aspects of policy, which tend to incline against the use of the activist systems.     

我国企业投资对财政货币政策冲击反应的实证分析

本文运用结构向量自回归（SVAR）模型方法研究了我国企业投资对财政货币政策冲击的反应。通过采用1998年1月～2009年4月的月度数据实证研究表明：在经济周期的不同阶段,央行控制货币供给量的能力存在差异,导致货币政策执行效果不同。在经济繁荣阶段,社会资金运用效率较高,不存在剩余流动性,央行可以较容易地通过调整基础货币和货币乘数控制货币供给总量。这时货币供给的外生性较强,货币政策作用效果比较显著;而在经济衰退阶段,可选择的投资机会较少,流动性相对过剩,货币供给内生性增强,这时央行采取扩张性货币政策不能有效提高货币供给量,货币政策作用效果减弱。短期内虽然财政支出对企业投资会产生正向影响,但是负向影响要大于正向影响,也就是说财政政策对企业投资具有明显的挤出效应。     

Optimal fiscal policy in a world liquidity trap

We construct a model of the international transmission of ‘liquidity trap’ shocks, and examine the case for international coordination of fiscal policy to respond to the liquidity trap. Integrated financial markets tend to propagate liquidity traps. In a global environment, fiscal policy may be effective in raising GDP when the economy is stuck in a liquidity trap, but it does so in a ‘beggar thy neighbor’ fashion; when one economy is in a liquidity trap, the cross country spillover effect of fiscal policy is negative. We examine the welfare optimizing policy response to a liquidity trap when countries coordinate on fiscal policy. Fiscal policy may be an effective tool in responding to a liquidity trap, although it is never optimal to use fiscal expansion sufficiently to fully eliminate a downturn. Moreover, there is little case for coordinated global fiscal expansion. For the most part, the country worst hit by a liquidity trap shock should use its own policies to respond, without much help from foreign policies.     

The role of liquidity in monetary policy transmission: Evidence from Indian banks1

The role of bank liquidity in monetary policy transmission has received insufficient attention in the literature. Faced with monetary tightening, banks with more liquidity can sell off securities and protect their loan portfolios. We test this proposition using panel data for Indian banks during 2005–2020. Employing dynamic threshold panel regressions with liquid assets as the threshold variable, we show that bank lending declines with monetary policy tightening in low liquidity regimes, but not in high liquidity regimes. We also find evidence for different portfolio reallocation behaviour by banks in high versus low liquidity regimes in response to monetary policy changes.     

Some implications of the natural rate hypotheses

Changes in the anticipated and actual levels of inflation change the incentive to hold monetary and nonmonetary assets. We present a model with a production sector and markets for labor, capital, bonds, and money. The response of the model to changes in the anticipated inflation rate is derived. Restrictions implied by the various natural rate hypotheses are discussed. An asymmetry in the response of the economy to anticipated inflation and deflation makes the natural rate conditions more plausible for inflationary as opposed to deflationary equilibria. A new version of the liquidity trap is suggested by the analysis.     

Raising an inflation target: The Japanese experience with Abenomics

This paper draws from Japan׳s recent monetary experiment to examine the effects of an increase in the inflation target during a liquidity trap. We review Japanese data and examine through a VAR model how macroeconomic variables respond to an identified inflation target shock. We apply these findings to calibrate the effect of a shock to the inflation target in a new-Keynesian DSGE model of the Japanese economy. We argue that imperfect observability of the inflation target and a separate exchange rate shock are needed to successfully account for the behavior of nominal and real variables in Japan since late 2012. Our analysis indicates that Japan has made some progress towards overcoming deflation, but further measures are needed to raise inflation to 2 percent in a stable manner.     

Liquidity and investor confidence in the turn-of-the-month regularity

Ogden (1990) offers a compelling explanation for the ubiquitous turn-of-the-month (TOM) seasonality. He hypothesizes and shows that the clustering of payment dates at the end of the month results in a stock return regularity that is related to increased liquidity and monetary policy. This article introduces investor behaviour into Ogden’s TOM liquidity hypothesis where higher TOM returns depend not only on the availability of increased liquidity but also on investors’ willingness to invest new funds. The empirical evidence is consistent with the argument. When confidence is high, investors’ willingness to invest the increased liquidity results in a TOM regularity. But when confidence is low, a TOM regularity is absent as investors park the increased liquidity. This additional measure of investor confidence provides a more complete explanation of Ogden’s liquidity hypothesis.     

On the monetary nature of the interest rate in a Keynes–Schumpeter perspective

Abstract

Keynes, in the General Theory, explains the monetary nature of the interest rate by means of the liquidity preference theory. The objective of this article is twofold. The first objective is to point out the limits of the liquidity preference theory. The fundamental limitation of this theory is that it does not allow to realize the intent declared by Keynes in 1933 to elaborate a monetary theory of production The second objective is to present a more solid theory of the monetary nature of the interest rate. It will be shown that an essential element of this explanation is Schumpeter’s analysis of the role of bank money in a capitalist economy. In fact, this analysis represents a fundamental tool to explain the characteristics that, according to Keynes, distinguish a monetary economy from a real-exchange economy     

The People’s bank of China’s response to the coronavirus pandemic: A quantitative assessment

The People’s Bank of China (PBoC) has implemented numerous measures to cushion the impacts of the COVID-19 health crisis on the Chinese economy. Since the current monetary policy framework features a multi-instrument mix of liquidity tools and pricing signals, we employ a dynamic-factor modelling approach to derive a composite indicator of China’s monetary policy stance. Our quantitative assessment shows that the PBoC’s policy response to the outbreak of the COVID-19 pandemic has been swift and decisive. Specifically, our estimates reveal that the PBoC has implemented novel policy measures to ensure that commercial banks maintain liquidity access and credit provision during the COVID-19 crisis.     

Inside and outside fiat money, gains to trade, and IS-LM

Summary. We build a one-period general equilibrium model with money. Equilibrium exists, and fiat money has positive value, as long as the ratio of outside money to inside money is less than the gains to trade available at autarky. We show that the nominal effects of government fiscal and monetary policy can be completely described by a diagram identical in form to the IS-LM curves introduced by Hicks to describe Keynes' general theory. IS-LM analysis is thus not incompatible with full market clearing, multiple commodities, and heterogeneous households. We show that as the government deficit approaches a finite threshold, hyperinflation sets in (prices converge to infinity and real trade collapses). At the other extreme, if the government surplus is too large, the economy enters a liquidity trap in which nominal GNP sinks and monetary policy is ineffectual. Received: January 2, 2002; revised version: April 8, 2002 Correspondence to: P. Dubey     

Stabilization policy in a Keynes–Goodwin model with debt accumulation

In this paper, we investigate the macroeconomic impact of government's stabilization policy by using an analytical framework of Keynes–Goodwin model of growth cycle with debt accumulation. Formally, our model is formulated as a five-dimensional system of non-linear differential equations. We consider both of private debt and public debt, and we explicitly formulate the budget constraint of the ‘consolidated government’ including the central bank. We mainly study the case of ‘liquidity trap’ under money and debt financing of the government deficit.We study the local stability/instability of the system and the conditions for the existence of cyclical fluctuations analytically by means of the linear approximation method. We show that the sufficiently active monetary/fiscal policy can stabilize the intrinsically unstable economy if the inflation targeting by the central bank is sufficiently credible. We also present some numerical examples, which support our analysis.