流动性冲击、货币政策失误与金融危机——对美国金融危机的反思

本文认为:(1)流动性冲击主要通过资产负债表渠道和资产价格渠道来影响金融市场,正是这两种渠道才使得流动性在金融危机爆发及传导的过程中扮演了重要角色。借款人的资产负债表效应导致损失螺旋和保证金螺旋的产生,造成资产的折价销售,推动了资产价格的下跌和进一步的银根紧缩;(2)房地产泡沫的形成与美联储的货币政策失误、金融市场结构变化、新布雷顿森林体系以及投资者的羊群行为等有关,房地产泡沫破灭是美国金融危机的导火索;(3)金融危机爆发后,美联储通过调整中央银行的资产负债表,推出各种形式的金融创新工具,向金融市场注入流动性,有效地降低了金融市场崩溃的概率。论文最后从流动性管理的角度,对美国金融危机进行了反思。     

不同目标制下的中国最优货币政策分析

在更灵活的汇率制度下,中国货币政策会对经济产生什么影响？通过建立一个统一的开放宏观经济模型,发现如果中央银行要实现开放经济下不同目标制的最优货币政策,浮动汇率制成为稳定国内经济,有效应对国内外冲击与实施独立和内向型货币政策的最优选择。     

基于ERPT效应的我国货币政策与汇率政策协调性研究

通过ARDL模型对我国名义有效汇率对物价水平的ERPT效应进行了测度,发现现阶段我国货币政策与汇率政策各自都较合乎情理,但是二者并没有达成一种相互协调的整体。在目前ERPT效应相对较低（货币政策的稳定情况影响效应的大小）和支出转换效应效果不明显的现实情况下,保证货币政策稳健、及时、有效,并对货币供给的自主控制将成为我国央行的首要目标,而适度的放开名义汇率的浮动范围将成为实现这一目标的有效途径。     

最优货币区视角下的中国货币政策区域效应分析

基于最优货币区理论,中国还不是最优货币区.按照外贸依存度和人均CDP把中国经济区域分为A、B、C三个区域,采用向量自回归模型(VAR)和脉冲响应函数(IRF)定量检验得出,中国确实存在货币政策的区域效应.从货币政策传导机制的角度来看,汇率渠道是产生货币政策区域效应的主要原因,利率渠道对货币政策区域效应的解释力不强.     

开放经济下中国货币政策独立性分析——兼论通货膨胀

开放经济下,中国货币供应量受制于外汇储备使货币政策丧失独立性。双顺差积聚起的巨额外汇储备是影响中国货币政策独立性的主要因素,通货膨胀也与货币政策的内生有关。应该改善一直以来实施的强制结售汇制度为意愿结售汇制度,加速利率市场化进程,尽快打通货币市场利率与金融机构存贷款利率的传导渠道,提高货币政策的效率,才能从根本上避免长期使用外汇冲销干预带来的各种政策弊端和机制扭曲。     

A Model of Monetary Policy Shocks for Financial Crises and Normal Conditions

Deteriorating economic conditions in late 2008 led the Federal Reserve to lower the target federal funds rate to near zero, inject liquidity through novel facilities, and engage in large‐scale asset purchases. The combination of conventional and unconventional policy measures prevents using the effective federal funds rate to assess the effects of monetary policy beyond 2008. We employ a broad monetary aggregate to elicit the effects of monetary policy shocks both before and after 2008. Our estimates align well with major changes in the Fed's asset purchase programs and yield responses that are free from price, output, and liquidity puzzles that plague other approaches.     

货币政策、宏观审慎与汇率波动--基于时变效应的新视角

本文研究央行政策对人民币外汇市场压力的时变性影响。研究发现,央行数量型货币政策和宏观审慎政策主要通过影响人民币在国际货币市场的"相对"供给水平来影响人民币外汇市场压力的波动,宽松政策在经济高涨时期和经济新常态时期会引起人民币外汇市场贬值压力,在经济萧条时期会引起人民币外汇市场升值压力;央行价格型货币政策主要通过影响人民币在国际货币市场的"相对"需求水平来影响人民币外汇市场压力的波动,宽松政策在经济高涨时期和经济新常态时期会引起人民币外汇市场升值压力,在经济萧条时期会引起人民币外汇市场贬值压力。     

Hot Money and Quantitative Easing: The Spillover Effects of U.S. Monetary Policy on the Chinese Economy

We develop a factor‐augmented vector autoregression (FA‐VAR) model to estimate the effects that unanticipated changes in U.S. monetary policy and economic policy uncertainty have on the Chinese housing, equity, and loan markets. We find the decline in the U.S. policy rate since the Great Recession has led to a significant increase in Chinese housing investment. One possible reason for this effect is the substantial increase in the inflow of “hot money” into China. The responses of Chinese variables to U.S. shocks at the zero lower bound are different from those responses in normal times.     

后危机时代美欧货币政策的成效分析与诱因比较

美国金融海啸与欧元区主权债务危机的爆发推动了非传统货币政策工具的运用,改变了发达国家对危机前货币政策的共识。央行资产负债表变动和前瞻性指引成了危机期间美欧频繁使用的量化宽松政策,这些政策使美国从金融海啸中走出来并重拾经济复兴之路。但欧元区主权债务危机的反复爆发和传染表明,这些政策要充分发挥作用尚需要超国家的欧洲政治经济机构的整合。美国的成功取决于美国联邦政府和货币机构作为一个整体,愿意共同合作并做出对国家最有利的事情,而且共同服从国家利益的观念得到社会普遍的认可和尊重。欧元区走不出危机泥潭、经济继续衰退主要源于：一是危机解决的公共品属性诱发了成员国的集体行动和道德风险;二是货币政策引发的利益冲突与强权政治的影响;三是作为一个松散的联邦,当共同面对危机问题时,缺乏一个超国家的权威政府,能够在促进公共利益上做出正确的政策决策。     

U.S. Monetary Policy and International Bond Markets

This paper analyzes how U.S. monetary policy affects the pricing of dollar‐denominated sovereign debt. We document that yields on dollar‐denominated sovereign bonds are highly responsive to U.S. monetary policy surprises—during both the conventional and unconventional policy regimes—and that the passthrough of unconventional policy to foreign bond yields is, on balance, comparable to that of conventional policy. In addition, a conventional U.S. monetary easing (tightening) leads to a significant narrowing (widening) of credit spreads on sovereign bonds issued by countries with a speculative‐grade credit rating but has no effect on the corresponding weighted average of bilateral exchange rates for a basket of currencies from the same set of risky countries; this indicates that an unanticipated tightening of U.S. monetary policy widens credit spreads on risky sovereign debt directly through the financial channel, as opposed to indirectly through the exchange rate channel. During the unconventional policy regime, yields on both investment‐ and speculative‐grade sovereign bonds move one‐to‐one with policy‐induced fluctuations in yields on comparable U.S. Treasuries. We also examine whether the response of sovereign credit spreads to US monetary policy differs between policy easings and tightenings and find no evidence of such asymmetry.     

Optimal Monetary and Fiscal Policy with a Zero Bound on Nominal Interest Rates

I characterize optimal monetary and fiscal policy in a stochastic New Keynesian model when nominal interest rates may occasionally hit the zero lower bound. The benevolent policymaker controls the short‐term nominal interest rate and the level of government spending. Under discretionary policy, accounting for fiscal stabilization policy eliminates to a large extent the welfare losses associated with the presence of the zero bound. Under commitment, the gains associated with the use of the fiscal policy tool remain modest, even though fiscal stabilization policy is part of the optimal policy mix.     

Optimal Monetary Policy in a Model of Money and Credit

We investigate the extent to which monetary policy can enhance the functioning of the private credit system. Specifically, we characterize the optimal return on money in the presence of credit arrangements. There is a dual role for credit: it allows buyers to trade without fiat money and also permits them to borrow against future income. However, not all traders have access to credit. As a result, there is a social role for fiat money because it allows agents to self‐insure against the risk of not being able to use credit in some transactions. We consider a (nonlinear) monetary mechanism that is designed to enhance the credit system. An active monetary policy is sufficient for relaxing credit constraints. Finally, we characterize the optimal monetary policy and show that it necessarily entails a positive inflation rate.     

Economic Policy and the Great Depression in a Small Open Economy

We use a standard New Keynesian model of a small open economy, extended to include a government sector, to investigate the Great Depression in Australia. A calibrated model with a fixed exchange rate regime, similar to the gold standard, does well in replicating the dynamics of output during the interwar period. We then ask to what extent shocks to the economy would have been moderated by adopting modern‐day policies. We find that if policymakers had adopted a flexible exchange rate with a Taylor rule policy that output fluctuations during the Great Depression would have been moderated by up to 25%. Changes in government fiscal policy would also have moderated output fluctuations, but by a slightly smaller amount. Overall, we find that improved policy could have reduced output fluctuations by almost 50%.     

Labor Force Participation and Monetary Policy in the Wake of the Great Recession

This paper provides compelling evidence that cyclical factors account for the bulk of the post‐2007 decline in the U.S. labor force participation rate (LFPR). We then formulate a stylized New Keynesian model in which the LFPR is practically acyclical during “normal times” but drops markedly following a large and persistent aggregate demand shock. These considerations have potentially crucial implications for the design of monetary policy, especially when interest rate adjustments are constrained by the zero lower bound; specifically, monetary policy can induce a more rapid recovery of the LFPR by allowing the unemployment rate to fall below its natural rate.