International capital flows,liquidity risk,and monetary policy

In recent years, there has been a large amount of lending coming from the public sector of many developing countries. At the same time, the financial sectors in many advanced countries have issued a large share of portfolio debt to other countries. What are the implications of these events for the global financial system and overall economic activity? Do they have an impact on the transmission channels of monetary policy across countries at different stages of economic development? We investigate these important issues using a micro-founded model of money and banking so that the effects of monetary policy across countries can be meaningfully studied. Notably, the increase in capital outflows to the advanced economy renders monetary policy in developing countries to be less effective, while the effects of monetary policy in advanced economies are more pronounced. Yet, our results indicate that it can indeed be optimal for lower income countries to lend to the advanced world. Importantly, we find that the optimal amount of lending to advanced countries critically depends on the degree of liquidity risk — if it is sufficiently high, then public sector lending to advanced economies is not warranted. Consequently, our results indicate that governments in developing countries should carefully consider how much capital they send abroad to foreign countries.     

Liquidity risk and financial competition: Implications for asset prices and monetary policy

This paper studies the implications of banking competition for capital markets and monetary policy. In particular, I develop a two-sector monetary growth model in which a group of agents is exposed to liquidity shocks and money is essential. Banks insure depositors against such risk and invest in the economy's assets. In this setting, I compare an economy with a perfectly competitive banking sector to an economy with a fully concentrated financial sector. Unlike previous work, banks can have market power in both deposits and capital markets. Compared to a perfectly competitive financial sector, I demonstrate that a monopolistic banking system can have substantial adverse consequences on capital formation, assets prices, and the degree of risk sharing. Furthermore, multiple steady-states can emerge and the economy becomes subject to poverty traps. More importantly, market power in financial markets may overturn the Tobin effect present under a perfectly competitive financial sector. This necessarily happens in economies with high degrees of liquidity risk and low levels of capital formation.     

Optimal monetary policy: distribution efficiency versus production efficiency

This paper investigates the trade‐off between distribution effect and production effect of monetary policy when there exist unobservable idiosyncratic liquidity shocks. In the absence of risk‐sharing arrangements such as a credit market, monetary policy serves to provide ex post insurance to smooth consumption. Specifically, issuing interest‐bearing bonds restores credit transactions on money through bond‐money exchanges. Such a policy has a positive distribution effect, but the resulting inflation hampers production efficiency. It is demonstrated that the trade‐off between distribution efficiency gain and production efficiency loss would result in net welfare enhancement if consumers are relative‐risk‐averse enough.     

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.     

Optimal monetary policy and economic growth

A question at the center of many analyses of optimal monetary policy is, why do central banks never implement the Friedman rule? To the list of answers to this question, we add neoclassical production (specifically, the Tobin effect) as one possible explanation. To that end, we study an overlapping generations economy with capital where limited communication and stochastic relocation create an endogenous transactions role for fiat money. We assume a production function with a knowledge externality (Romer style) that nests economies with endogenous growth (AK form) and those with no long-run growth (the Diamond model). The Tobin effect is shown to be always operative. Under CRRA preferences, a mild degree of social increasing returns is sufficient (but not necessary) for some positive inflation to dominate zero inflation and for the Friedman rule to be sub-optimal, irrespective of the degree of risk aversion.     

Long-Run Links among Money, Prices and Output: Worldwide Evidence

Abstract. Starting from the quantity theory of money we analyse the dynamic relationships between money, real output and prices for an unbalanced panel of 110 economies. Complementary to trivariate analyses we also adopt a P-star model explaining inflation via an equilibrium price level (P-star), which in turn depends on potential output and money. A key issue of the paper is the cross-sectional stability of estimation and inference results. We find cointegration among the considered variables. Particularly for high inflation countries homogeneity between prices and money cannot be rejected. Given homogeneity we find evidence for an error-correction mechanism linking current price changes and the lagged price gap. Parameter estimates indicating the adjustment towards the price equilibrium are larger in absolute value for high inflation countries. The latter results indicate that central banks, even in high inflation countries, can improve price stability by controlling monetary growth.     

Is inflation targeting a good remedy to control inflation?

Since the 1990s inflation targeting (IT) has been adopted by several central banks as a strategy for monetary policy. It is expected that the adoption of this monetary regime can reduce inflation and inflation volatility. This article is concerned with these issues and makes use of the Propensity Score Matching methodology on a sample of 180 countries for the period from 1990 to 2007. For analysis, the sample is split into two sets of countries (advanced and developing). The findings suggest that the adoption of IT is an ideal monetary regime for developing economies and, in addition to reducing inflation volatility, can drive inflation down to internationally acceptable levels. Regarding advanced economies, the adoption of IT does not appear to represent an advantageous strategy. In brief, the empirical results indicate that the adoption of IT is useful for countries that must enhance their credibility for the management of monetary policy.     

Price and liquidity puzzles of a monetary shock: Evidence from indebted African economies

Price and liquidity puzzles have been identified as two major counterintuitive findings arising from monetary shocks. We investigate their presence in eleven African countries, using a dynamic stochastic general equilibrium model designed for indebted small open-economies. Our simulations reveal that the majority of African countries report a price puzzle whereas only three countries exhibit liquidity effect. In many of the sampled countries, a positive money growth shock drives interest rates up, but consumption and output fall in contrast to the conventional view. External debt increases in response to money growth shock, exchange rate appreciates and inflation falls. Money growth shocks are transmitted to the economy through the exchange rate channel when uncovered interest rate parity condition holds. Our findings therefore appear to suggest that monetary policy in Africa should prioritize foreign debt stabilization by reacting more to output gap than to inflation.     

Social status, human capital formation and super-neutrality in a two-sector monetary economy

In this paper, we study how social status affects the impact of monetary policy on the long-run growth rate in a two-sector monetary economy with human capital accumulation, and find that the super-neutrality of money, with regard to the growth rate of the economy depends on the formation of human capital. In an economy with Lucas-type human capital formation, money is super-neutral; however, for an economy in which both physical and human capital are used as inputs for human capital accumulation, the money growth rate will have a positive effect on the long-run economic growth rate. The existence, uniqueness and saddle-path stability of balanced-growth equilibrium are also examined.     

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.     

美国宽松的货币政策制造了世界性高通胀吗——基于次贷危机后不同经济体通货膨胀差异的分析

为了避免次贷危机所造成的不利影响,美国自2007年底开始大幅下调利率,并从2009年以来采取了量化宽松的货币政策,大量增加流动性。与此同时,2008年以来,世界各国尤其是新兴市场和发展中经济体发生了严重的通货膨胀。现存文献大多将此归因于美国宽松的货币政策,其实并不完全如此。虽然美国次贷危机以来的宽松货币政策确实提高了2008年以来的通货膨胀率,却不能解释新兴市场和发展中经济体的通货膨胀普遍高于发达经济体的事实。因此,美国宽松的货币政策只是扩大了原有的通货膨胀,而高通胀的根本原因仍然在于各国国内的高货币供给。     

The role and impact of monetary policy in CEFTA countries

An effective monetary policy requires a stable relationship between the money stock and macroeconomic variables such as output, price level, interest rates, and exchange rates. A dynamism of structural changes in transition economies of eastern Europe makes such stability far from obvious. This is reflected in the fact that a stable demand for money function cannot be estimated even for the most advanced East European countries: Poland, Hungary, and the Czech Republic. Empirical analysis of the relationship between nominal variables indicates rather limited relationships as well. Therefore, all that can be expected from monetary policy in eastern Europe is not to be too tight so as to starve the economy of needed liquidity and not to be too loose so as to ignite inflation.     

Financial market imperfections and monetary policy strategy

In a model with imperfect money, credit and reserve markets, we examine if an inflation-targeting central bank applying the funds rate operating procedure to indirectly control market interest rates also needs a monetary aggregate as policy instrument. We show that if private agents use information extracted from money and financial markets to form inflation expectations and if interest rate pass-through is incomplete, the central bank can use a narrow monetary aggregate and the discount interest rate as independent and complementary policy instruments to reinforce the credibility of its announcements and the role of inflation target as a nominal anchor for inflation expectations. This study shows how a monetary policy strategy combining inflation targeting and monetary targeting can be conceived to guarantee macroeconomic stability and the credibility of monetary policy. Friedman's k-percent money growth rule, which can generate dynamic instability, and two alternative stabilizing feedback monetary targeting rules are examined.     

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.     

Eurosystem monetary targeting: Lessons from U.S. data

Using a small empirical model of inflation, output, and money estimated on U.S. data, we compare the relative performance of monetary targeting and inflation targeting. The results show monetary targeting to be quite inefficient, yielding both higher inflation and output variability. This is true even with a nonstochastic money demand formulation. Our results are also robust to using a P∗ model of inflation. Therefore, in these popular frameworks, there is no support for the prominent role given to money growth in the Eurosystem's monetary policy strategy.     

Societal benefits of illiquid bonds

In this paper, I provide a possible explanation of why nominally risk-free bonds are essential in monetary economies. I argue that the role of nominal bonds is to enable agents to engage in intertemporal exchanges of money. I show that bonds can only serve this role if they are illiquid (costly to exchange for goods). Finally, I argue that in economies in which nominal bonds are essential, it is optimal for monetary policy to respond to changes in the distribution of liquidity needs.     

The application of neural networks to the Divisia index debate: evidence from three countries

If monetary policy is to be effective in controlling the macroeconomy, accurate measurement of the money supply is essential. The conventional way of measuring the level of the money supply is to simply sum the constituent liquid liabilities of banks. However, a more sophisticated, weighted monetary index has been proposed to take account of the varying degrees of liquidity of the short-term instruments included in money. Inferences about the effects of money on economic activity may depend importantly on the choice of monetary index because simple sum aggregates cannot internalize pure substitution effects. This hypothesis is investigated in the current paper. A Divisia index measure of money is constructed for the USA, UK and Italian economies and its inflation forecasting potential is compared with that of its simple sum counterpart in each of the three countries. The powerful Artificial Intelligence technique of neural networks is used to allow a completely flexible mapping of the variables and a greater variety of functional form than is currently achievable using conventional econometric techniques. The application of neural network methodology to examine the money-inflation link is highly experimental in nature and, hence, the overriding feature of this research is one of simplicity. Superior inflation forecasting models are achieved when a Divisia M2 measure of money is used in the majority of cases. This support for Divisia is entirely consistent with findings based on standard econometric techniques reported from the respective central and Federal Reserve banks of each country. Divisia monetary aggregates appear to offer advantages over their simple sum counterparts as macroeconomic indicators. Further, the combination of Divisia measures of money with the artificial neural network offers a promising starting point for improved models of inflation.     

How justified is abandoning money in the conduct of monetary policy in Australia on the grounds of instability in the money‐demand function?

The role of money in the design and conduct of monetary policy has reemerged as an important issue in both advanced and developing economies, especially since the 2007 global financial crisis. A growing body of recent literature suggests that the causal relationship between money supply growth and inflation remains intact across countries and over time and that this relation is not conditional on the stability of the money‐demand function or whether money is endogenous or exogenous. Moreover, critical for a rule‐based monetary policy is the presence of a long‐run stable money‐demand function, rather than a short‐run money‐demand model that may exhibit instability for many reasons, including problems with estimating a money‐demand model with high‐frequency data. Provided that a stable money‐demand function exists, it could be useful to establish long‐run equilibrium relations among money, output, prices, and exchange rates, as the classical monetary theory suggests. Within this analytical framework, this paper addresses the question of whether money has any role in the conduct of monetary policy in Australia. The conventional wisdom is that the money‐demand function in Australia has been unstable since the mid‐1980s due to financial deregulation and reforms; this led to a change in the strategy of monetary policy for price stability in the form of inflation targeting that ignores money insofar as inflation and its control are concerned. This paper reports empirical findings for Australia, obtained from a longer quarterly data series over the period 1960Q1–2015Q1, which suggest that instability in the narrow‐money‐demand function in Australia was primarily due to the exclusion of variables which have become important in the deregulated environment since the 1980s. These findings are confirmed by an expanded form of the narrow‐money‐demand function that was found stable over the past two decades, although it experienced multiple structural breaks over the study period. The paper draws the conclusion that abandoning the monetary aggregate as an instrument of monetary policy in Australia, under a rule‐based monetary policy such as inflation targeting, cannot be justified by instability in the money‐demand function or even by lack of a causal link between money supply growth and inflation.     

The cost of capital,asset prices,and the effects of monetary policy

The primary objective of this paper is to study the interaction between monetary policy, asset prices, and the cost of capital. In particular, we explore this issue in a setting where individuals face idiosyncratic risk. Incomplete information also provides a transactions role for money so that monetary policy can be studied. In contrast to standard monetary growth models which focus on the transmission of monetary policy to the demand for capital goods, we incorporate a separate capital goods sector so that the supply response to monetary policy is taken into account. Consequently, in contrast to the standard monetary growth model, monetary policy plays an important role in investment activity through the relative price of capital goods. Moreover, different sources of productivity can affect the degree of risk sharing. Although the optimal money growth rate falls in response to an increase in productivity in either sector of the economy, monetary policy should react more aggressively to the level of productivity in the capital sector.     

当前我国货币政策工具选择的依据及运用

2010年我国调整了实施两年多的宽松货币政策,宣布2011年实行稳健的货币政策。使货币政策从宽松转向稳健的最直接原因是目前我国物价上涨加快,资产泡沫化加剧,通胀预期上升。但是,紧缩货币政策工具的力度除了考虑国内物价因素以外,还应考虑到国际因素。当前,外围主要经济体增长率下滑、失业率高企,因而当前甚至今后一段时间内,央行在使用紧缩货币政策工具收紧流动性、防止资产泡沫风险时,应把握好节奏和力度,以防经济硬着陆风险。