我国价格总水平决定的一个理论模型

开放经济条件下的价格总水平由产品市场、货币市场和劳动市场三个市场达到均衡状态时共同决定,影响我国价格总水平的主要因素包括货币供给量、名义工资水平、利率、汇率和资本市场发展水平。从长期来看,在其他情况不变的情况下,价格总水平随着名义货币供给量、名义工资水平、汇率以及利率的增加而上涨;推动资本市场发展对于促进价格总水平的稳定具有积极作用。     

A Poole Analysis in the New Open Economy Macroeconomic Framework*

This paper evaluates simple monetary policy rules in the tradition of the Poole analysis within a general two‐country model for a large economy and a small open economy. The results for the large economy resemble those of the original Poole scenario and also extend to the welfare measure. In particular, an interest rate rule is preferable to a money supply rule when liquidity shocks dominate, whereas a money supply rule fares better with real shocks. For the small open economy, the stabilization properties of the large‐economy case continue to hold for domestic shocks, but a money supply rule performs better than an interest rate rule using the welfare measure. If shocks originate in the foreign economy, a money supply rule turns out to be superior both in terms of its stabilization properties as well as in terms of welfare.     

The ‘compensation’ thesis,as exemplified by the case of the Chinese central bank

This paper extends the theory of demand-led money supply endogeneity to the case of an open economy with a fixed exchange rate. This theory is contrasted to the standard Mundell-Fleming view. In the compensation approach advocated here, central banks are able to set interest rates, even in a fixed exchange rate regime, either because there are automatic market mechanisms that will induce the private sector to act in such a way that changes in foreign reserves will be compensated by opposite changes in central bank claims over the domestic economy, or because the central bank will engage in endogenous sterilization operations in its efforts to enforce its benchmark interest rate. Analyzing the balance sheet of the Chinese central bank, we find that the large rise in foreign reserves on the asset side is compensated by large positive changes in items of the liability side, mainly bonds issued by the central bank. Foreign reserves are not cointegrated with the monetary base, meaning that there is no long-run relationship between foreign exchange reserves and the supply of base money. We also find no long-run relation between foreign exchange reserves and the consumer price index.     

Inflation and output dynamics with a floating exchange rate

The purpose of this paper is to extend a simple monetarist model of price output fluctuations in a closed economy to the case of a small open economy with a floating exchange rate. Trade and capital flows are explicitly incorporated into the model, exchange rate expectations and inflation expectations are treated separately and exchange rate expectations are integrated into the demand for money function. The properties of the model are investigated under the limiting cases of perfect capital mobility and zero capital mobility. Stability conditions and short run price-output trade-offs are derived and the conclusions for cyclical output patterns are deduced. It is also shown how the short run movement of the exchange rate deviates from purchasing power parity in a systematic fashion.     

汇率变动与我国货币需求非线性误差修正

文章引入汇率变动变量对开放经济条件下我国货币需求函数进行研究.经验结果表明:(1)汇率变动是影响我国长期货币需求稳定的关键因素,且汇率变动对我国货币需求有正向的影响;(2)线性误差修正模型描述我国广义货币需求动态并不合适,非线性误差修正模型则能对广义货币需求的短期动态机制进行较好的解释.     

Monetary policy under flexible exchange rates: When is expansion contractionary?

This paper studies whether the observed instability in the effects of monetary policy could be due to the way in which the behavior functions have been specified in an open economy context. Accordingly, special emphasis is on the specification of the behavior functions to correspond to their foundations in closedeconomy macrotheory. The demand for real money balances, in terms of the expenditure basket of goods, is specified as a function of income in terms of the same basket. Imports are specified as a function of expenditures, being functionally part of expenditures. The supply of labor is specified as a function of the expenditure price.It is shown that the exchange rate overshoots but output declines, to eventually rise above its original level in response to monetary expansion in the real wage model. In the money wage model, output and the exchange rate overshoot their steady-state levels if the expansion eventually leads to an increase in nominal wealth. If it leads to a decrease, both variables undershoot. However, if interest payments on foreign securities are not small relative to the trade balance, many of the effects are reversed. Thus the overshooting result is far from robust even in a standard model with an exogenous money supply.     

Capital inflows, fiscal discretion, and exchange rate policy

Many writers have argued for the benefits of a credible fixed exchange rate (a hard peg) as a commitment device in an open economy. But historically, fixed exchange rates have often been associated with large current account deficits and episodes of ‘over-borrowing’. This paper develops a model of capital inflows that are linked to the exchange rate regime because of endogenous fiscal policy. The key message of the paper is that a hard peg is undesirable in the absence of commitment in fiscal policy. In face of a credible fixed exchange rate, the fiscal authority subsidizes capital inflows. The economy will engage in inefficiently high international borrowing, and in welfare terms may end up worse off than under capital market autarky. To eliminate the incentive to subsidize borrowing, the monetary authority must follow a flexible exchange rate rule in which capital inflows lead to exchange rate appreciation. If fiscal policy must be financed by money creation rather than direct taxation, then a fixed exchange rate rule may cause both over-borrowing and a subsequent exchange rate crisis.     

International Transmission of Monetary Shocks and the Non‐neutrality of International Money

Monetary shocks and how they are transmitted internationally are investigated in this paper. The paper shows that where a national currency is used as an international medium of exchange, the international money is non‐neutral. In particular, an increase in the supply of the international money leads to a transfer of real resources to the international money‐issuing country from its trading partner. It also induces an expansion of the nontradable sector in the international money‐issuing country, and an expansion of the tradable sector in its trading partner. The real impact of a monetary shock is greater under a fixed exchange rate system than under a flexible exchange rate system.     

Monetary policy in open economies

The recent literature on monetary policy in open economies has produced a strong presumption in favor of activistic policy and flexible exchange rates. We argue that this result may owe much to the combination of two commonly made assumptions: That nominal goods prices are rigid. And that the monetary authorities have a lot of information about the economy. When the source of nominal rigidity is found in wages and monetary policy is conducted according to less information demanding rules (such as a standard interest rate rule) policies that stabilize the money supply or the nominal exchange rate may perform better.     

Free Banking in Hong Kong

Hong Kong has no central bank and its paper currency is issued by two private commercial banks. Cointegration tests and an error-correction model are used to examine the stability of the money supply process under pegged and floating exchange rates. Empirical evidence suggests feedback between the price level and money supply during the floating rate period but stability under a pegged rate. [E 42]     

The Doctoral Origins of Economics Faculty and the Education of New Economics Doctorates

For the open economy, the workhorse model in intermediate textbooks still is the Mundell-Fleming model, which basically extends the investment and savings, liquidity preference and money supply (IS-LM) model to open economy problems. The authors present a simple New Keynesian model of the open economy that introduces open economy considerations into the closed economy consensus version and that still allows for a simple and comprehensible analytical and graphical treatment. Above all, their model provides an efficient tool kit for the discussion of the costs and benefits of fixed and flexible exchange rates, which also was at the core of the Mundell-Fleming model.     

Money and the gains from trade*

This article studies the role of money in environments where in each meeting there is a double coincidence of real wants. Traders who meet at random finance their purchases through current production, the sale of divisible money or both. It is shown that in the absence of valued money if traders have asymmetric tastes for each other's good, they produce and exchange socially inefficient quantities. With valued money, however, traders exchange efficient quantities if the asymmetry of tastes is not too large. It is shown that the gains from trade in the monetary economy are strictly greater than those in the corresponding barter economy, that the Friedman rule holds, and that the allocation of resources in the monetary economy converges to the allocation in the barter economy as the growth rate of the money supply is increased.     

A K% MONEY GROWTH LEADERSHIP RULE IN AN INTERNATIONAL MONETARY POLICY GAME

This paper examines a version of the Friedman k% money growth rule in an open economy monetary policy game. Using the two-country model proposed by Canzoneri and Henderson (1991), we show that, in response to asymmetric aggregate demand shocks, the Pareto-efficient outcome can be achieved by a policy that we call a k% money growth leadership rule. Following that rule, one country, the leader, sets her money supply growth rate, and the follower sets her money supply growth rate so as to keep the sum of nominal money supply growth at k%. We show that this policy yields the same outcome as does cooperative equilibrium. We also show that alternative policy rules, such as keeping exchange-rate adjusted money supply growth at k%, or forming a currency union, will not lead to the Pareto-efficient outcome in response to these demand shocks. ( JEL E5, F3)     

Government policy with deficit financing,imperfect capital mobility and exchange rate effects on the supply side

This paper examines the impact of monetary and fiscal policy when supply-side effects of prices as well as exchange rates are taken into account in an open economy macro model. Partial deficit financing and imperfect international capital movements are appropriately modelled. It is shown that the well known Mundell–Fleming result, that fiscal policy is completely ineffective under perfect capital mobility and flexible exchange rates, is significantly affected when exchange rate effects on the supply side are taken into account. The paper also shows that such effects significantly alter the effects of devaluation under fixed exchange rates.     

Coffee export booms and monetary disequilibrium: some evidence for Colombia

The theoretical models that analyse the monetary consequences of export booms show that under a regime of fixed exchange rates, they affect not only the demand for money, via real income, but also the money supply via foreign exchange accumulation. Within this theoretical framework, this study proposes an empirical approach to determine whether the coffee booms of the second half of the 1970s and mid–1980s led to excess money supply in the Colombian economy. The findings provide evidence in favour of a direct association between coffee export booms and excess money supply, implying that external disturbances jeopardize the ability of the economic authorities to carry out successful monetary policy.     

A Geometric Analysis of Exchange Rate Adjustment Under Static and Rational Expectations*

This note presents a simple geometric apparatus for analyzing macroeconomic questions relating to small open economies. The particular problem analyzed here for illustrative purposes is the adjustment of a floating exchange rate regime, under both static and rational expectations, to a step increase in the money supply. We consider both an unanticipated immediate increase and an unanticipated announcement of a forthcoming increase. We derive the general criterion which determines whether the exchange rate initially overshoots or undershoots the change required for long-run equilibrium.     

The macroeconomy of Angola: breaks and persistence in Angolan macro data

Using long-range dependence techniques we examine the order of integration of Angola’s macro variables from a fractional viewpoint. Based on a small open economy model, the series examined are money reserves, credit, money supply, lending rate, exchange rates, CPI, GDP, oil revenues and government expenditure, for the period of January 2000 to December 2013. The results suggest that the variables are nonstationary with orders of integration equal to or higher than 1 suggesting nonmean-reverting behaviour. Structural breaks reveal that the series reflect the IMF intervention in Angola in 2003 to control inflation. Policy implications are derived.     

The determinants of international reserves in the small open economy: The case of Honduras

The strong monetary approach to the balance of payments suggests that for a small open economy with a fixed exchange rate, international-reserve losses are due to money-supply growth in excess of growth in money demand, where money demand is assumed to be a stable function of exogenously given income and world prices. This paper tests the applicability of the strong monetary approach to Honduras during the period 1960–1983. Although the strong monetary approach provides a statistical explanation of reserve movements during this period, insights into the underlying causes of reserve changes can be obtained through recognition of the importance of the income terms of trade in determining both real income and domestic-credit growth in the small open economy.     

Optimal Choice of a Proximate Monetary Target in an Open Economy*

This paper investigates the implications of hitting a monetary target (rate of interest or money supply) in an open economy. The technique of linear optimal control is applied to a small open economy of the Australian economy. A feature of the model is the interrelationship between the monetary and open sectors which complicates the use of monetary policy. Four optimal control experiments are reported in detail. The results indicate that we should aim for a money-supply target rather than an interest-rate target and that some assistance from fiscal policy should be provided to monetary policy in order to achieve this target.     

Sources of business-cycle volatility: An exploratory study on a sample of OECD countries

This paper investigates the sources of output volatility in twenty-four OECD economies using annual data from the 1960 to 1990 period. The paper finds that output volatility is positively related to the volatility of the money supply and the variance of the Solow residual, but negatively related to government size. The degree of openness of the economy and the exchange rate flexibility are also positively related to the size of business fluctuations, while price flexibility and industrial structure have no effect on output volatility. These results shed some light on the issue of the sources of business cycles.