进出口贸易增长、人民币汇率波动与贸易均衡汇率决定——基于两国模型的理论与政策分析

非市场化商品和劳务、技术进步与人口增长速度差异等因素的存在,使得准确计算人民币均衡汇率面临诸多困难;只有当两国的技术进步增长率与人口增长率之和相等且两国的贸易量为零增长速度时,才会出现零波动幅度的贸易均衡汇率;在两国或者多国构成的国际经济体系中,在一定条件下可能存在贸易汇率波动均衡,但会表现出不同的特征;应根据我国贸易汇率波动均衡特征制订和实施更具灵活性和弹性的贸易政策和汇率政策.     

An Encompassing Test of Real Interest Rate Equalization*

Much confusion about the real interest rate connection amongst different countries may result from a narrow approach to analyzing the data. Using an encompassing methodology that accommodates many different types of times‐series processes, we find that real interest rates are mean‐reverting long‐memory variables. We show that cointegration methodology can often fail in this environment. Using a more general approach, we detect a limited connection between real interest rates across countries. In particular, Germany is connected with several European countries, but the US is connected only with Canada and possibly the United Kingdom.     

A Neo-Heckscher–Ohlin Model of Trade with Endogenous Production Patterns*

We propose a Neo-Heckscher–Ohlin (HO) model of trade that combines comparative endowment advantage, comparative technological advantage, international capital mobility and trade costs. Using an inframarginal approach, we produce a partition of the exogenous parameter space in a host of parameter value subsets that demarcate the various equilibrium patterns of production and trade. The results are startling! They suggest that production within the diversification cone – a key assumption of the Heckscher–Ohlin theory that is required for its core propositions (such as factor price equalisation) to hold – may only prevail on the razor's edge, or under exceptional circumstances. In addition, our findings nominate a mechanism by which improvements in transaction efficiency facilitate international trade thereby stimulating cross-country division of labour. Contrary to other generalisations of the Heckscher–Ohlin (such as the various derivatives of the Kemp–Jones model of trade), our model does not assume a purely Ricardian character: comparative endowment advantage may determine the pattern of trade even in the presence of opposing technological differences, as long as total factor productivity coefficients adjusted for transaction efficiency and factor intensity do not confer unambiguous comparative (technological) advantage. Still, ‘intensity-efficiency’-adjusted comparative technological advantage supersedes factor endowments in determining the flow of trade.     

International Trade,Budget Deficits,and the Interest Rate

In a keynote address to the Joint Council on Economic Education, the author pointed out that a tight money policy, budget deficits, and greater after-tax profitability of investment in the United States have contributed to the strength of the dollar and to the flow of funds into this country. The consequence and implication of this are examined, both with respect to the past and the near future.     

产业内贸易类型、利益与经济增长

在分析产业内贸易测度、分类及其利益的基础上,探讨产业内贸易促进经济增长的机制,并从产业内贸易总水平、垂直差异型产业内贸易、水平差异型产业内贸易等角度实证分析其对中国经济增长的影响。研究发现:垂直差异性产业内贸易在经济增长过程中起着促进作用,而水平差异性产业内贸易对经济增长起着阻碍作用。     

Jointness In Production and Factor-Price Equalization *

This paper argues that the presence of activities which yield outputs jointly does not damage the case for factor-price equalization. the crucial condition for equalization is similar to that in the no-joint production case: the number of common activities with independent input vectors that are actively used in both countries at least match the number of factors, and factor endowments lie sufficiently close. Indeed, joint production may increase the range of commodity prices for which factor prices are equalized by commodity trade.     

Trade,Growth, and Environmental Quality*

This paper examines linkages between international trade, environmental degradation, and economic growth in a dynamic North–South trade game. Using a neoclassical production function subject to an endogenously improving technology, North produces manufactured goods by employing labor, capital, and a natural resource that it imports from South. South extracts the resource using raw labor, in the process generating local pollution. We study optimal regional policies in the presence of local pollution and technology spillovers from North to South under both non‐cooperative and cooperative modes of trade. Non‐cooperative trade is inefficient due to stock externalities. Cooperative trade policies are efficient and yet do not benefit North. Both regions gain from improved productivity in North and faster knowledge diffusion to South regardless of the trading regime.     

Specialization and Dynamics in a Trade Model*

An economy which can produce two tradeable goods, and an investment good which augments capital stocks, is shown to specialize in an optimal stationary state unless it is in the interior of a continuum from which no change is ever needed. On the traverse to a stationary state, non-specialization occurs if at all for only a finite time. Although the instantaneous production frontier is concave, the long-run frontier is linear, but the long-run rate of product transformation differs from the supply price ratio with positive time-preference. Long-run specialization may differ from that predicted by long-run comparative advantage.     

Household Saving and The Rate of Interest*

This paper examines the relationship between the post-tax real interest rate and the Australian household saving ratio at the empirical level. Using alternative models of the consumption-saving decision and different estimation periods, it is shown that the post-tax real interest rate exerts a significant negative influence on the saving ratio. The estimates, therefore, imply that the fall in post-tax real interest rates during the 1970s contributed to the rise in the Australian saving ratio.     

Factor-Price Equalization By Trade In Joint and Non-Joint Production

Sans joint products, relative factor prices do determine relative goods prices. Free trade in goods thus can hope to equalize factor returns when this relationship is monotone and therefore uniquely reversible. However, when joint production obtains, often the same relative factor prices can entail an infinity of relative goods prices depending upon the composition of tastes and demand. In consequence, trade's equalization of goods prices is compatible with factor-returns inequality. Generic and singular relationships are described.     

Oligopsonistic Intermediate Input and Patterns of Trade *

We examine the validities of traditional trade theorems and patterns of trade for an economy with an oligopsonistic intermediate input. Specifically, the model consists of two final goods. one intermediate good, and two primary factors. One final good and the intermediate good are produced using primary factors, capital and labor. The second final good is produced using the intermediate good and labor. All markets operate under perfect competition except the intermediate good market, which is oligopsonistic. This model reflects the real world phenomena of oligopsony power excerted by some industries (e.g., the food processing industry) in the intermediate good purchases. Our analysis shows that some of the traditional trade theorems and H.O trade pattern may be overturned if the factor intensity of the competitive sector lies between those of oligopsony and intermediate good sectors. [F12]     

The US Trade Deficit and the Rate of Interest

It is well known that nations with high trade deficits normally have higher interest rates than those with surplus or balanced trade. However, such has not been the case with the USA, which has seen a relentless trade deficit since 1982. Its interest rates have been lower than those prevailing in many trade‐surplus nations. Furthermore, these rates fell even as the trade shortfall shot up, generating an interest‐rate paradox. This paper demonstrates that, unlike for other nations, the rising trade deficit itself became the cause of lower US interest rates, and this happened because of the world's strong interest in maintaining a high value of the dollar.     

Interest Rate Flexibility and the Open Economy*

The objective of the paper is to analyze the importance of institutional changes in the financial system for the efficacy of monetary policy and in particular for the connection between the balance of payments (capital account) and monetary policy. Particular institutional developments studied include the emergence of certificates of deposit and the removal of interest rate ceilings in 1973. The result established, using a general equilibrium model, is that the degree to which transactions in the capital account of the balance of payments offset a domestic monetary expansion is greater in a regime of market-determined interest rates than in a regime of administered rates.     

垂直生产结构、利率管制和资本错配

政府补贴、自然垄断定价权和行政进入壁垒的存在导致中国产生了以上游国企垄断、下游非国企竞争为特征的垂直生产结构,并引发了企业之间的资本错配。本文构建了含有垂直生产结构和利率管制的动态一般均衡模型,研究了资本错配的产生机理。结果表明:在垂直生产结构之下,国企尤其是亏损国企不仅凭借垄断地位挤占了非国企在上游行业的投资空间,而且通过抬高中间品价格削弱了非国企在下游行业的投资动机,导致资本明显错配,而利率管制则强化了垂直生产结构的影响。借助利率市场化改革和国企改革(核心是消除行政进入壁垒),当经济体达到新的均衡时,国企和非国企资本错配的问题将会显著改善,总产出将增加24.2%,居民消费将增加66.9%。本文研究还表明,两类改革不应该先后进行,而应该同时推进。     

Endogenous Exchange Rate Volatility, Trading Volume and Interest Rate Differentials in a Model of Portfolio Selection

This paper considers a portfolio model of exchange rate determination and focuses on endogenous sources of exchange rate volatility. It is shown that, in addition to volatility transmitted by conditionally heteroskedastic interest rates, the larger the serial correlation in interest rates the stronger the effect of interest rate differentials on exchange rate volatility. These features are supported by the data. The paper also looks at the volume–volatility relationship implied by the model.