Honduras: application of a CGE model

This paper constructs a social accounting matrix for Honduras to serve as a database for the computable general equilibrium (or CGE) model adapted to the characteristics of the Honduran economy. A number of simulations of economic policy modifications were carried out to quantify their possible impact on Honduran economy. This paper first considers the general characteristics of the Honduran economy and the main policy reforms put into effect these last few years. CGE model characteristics for Honduras are briefly presented, and the Honduran SAM for 1991 is described. Several simulations were run to assess the impact of selected policy changes. Results show that, in general, structural modification policies used to redirect the Honduran economy outwards (trade liberalization and devaluation of the lempira) favor agriculture, not only in terms of its domestic production but also concerning income distribution. The results are consistent with the ones proposed in the literature on economic development that maintains that interventionist policies linked to the import substitution model that were in fashion until the eighties were anti-agrarian. On the other hand, a reduction in public expenditure promotes less the Honduran rural sector, though it does not stop doing so. However, results also point to the fact that there are underlying problems in carrying out these liberalization measures. The clearest case is free trade, since compensating the drastic reductions to state income that are brought by the reduction or elimination of tariffs is no easy task.     

世界连接CGE模型方法、研制与应用

随着世界经济一体化和空间经济学的日益发展,系统模型方法在国家或区域间经济联动方面的扩展和深化研究正在显现出巨大的应用价值。本文首先开发一个世界连接可计算一般均衡模型,科学揭示各经济体的运行特征,为定量剖析世界范围内各经济体的经济增长、结构变动方面提供一个系统分析框架：一方面在模型的理论框架中,分析了世界CGE模型各个模块的构建思想和对应的主要方程及其特征;另一方面建立了世界连接社会核算矩阵。然后通过动态模拟分析,检验链接模式和国家间经济联系,以及应用于各经济体政策变化的综合影响评价。     

Defining efficient policies in a general equilibrium model: a multi-objective approach

Macroeconomic policy makers are typically concerned with several indicators of economic performance. We thus propose to tackle the design of macroeconomic policy using Multicriteria Decision Making (MCDM) techniques. More specifically, we employ Multi-objective Programming (MP) to seek so-called efficient policies. The MP approach is combined with a computable general equilibrium (CGE) model. We chose use of a CGE model since it has the dual advantage of being consistent with standard economic theory while allowing one to measure the effect(s) of a specific policy with real data. Applying the proposed methodology to Spain (via the 1995 Social Accounting Matrix) we first quantified the trade-offs between two specific policy objectives: growth and inflation, when designing fiscal policy. We then constructed a frontier of efficient policies involving real growth and inflation. In doing so, we found that policy in 1995 Spain displayed some degree of inefficiency with respect to these two policy objectives. We then offer two sets of policy recommendations that, ostensibly, could have helped Spain at the time. The first deals with efficiency independent of the importance given to both growth and inflation by policy makers (we label this set: general policy recommendations). A second set depends on which policy objective is seen as more important by policy makers: increasing growth or controlling inflation (we label this one: objective-specific recommendations).     

财政民生支出CGE模型闭合条件的选择与检验

CGE模型闭合条件是反映模型经济特性和影响模拟结果的关键方面,其选择也多凭建模者主观判断。本文构建财政民生支出CGE模型,运用计量经济方法对其45种闭合条件下居民收入变化的模拟结果进行实证和检验。研究发现,部分闭合条件下的CGE模型结果与相应VAR模型脉冲冲击后各个变量响应的结果存在较大程度的接近,这些结果与我国当前经济状况相符,且更为准确,从而证明在CGE建模时可以借助计量经济方法进行闭合条件的选择。     

Economic development and resource degradation: Conflicts and policies

The paper develops a model that shares common features with computable general equilibrium (CGE) models. It is used to address two questions. First, what are the future prospects of a green gross domestic product (GDP); should we be concerned with resource degradation or not; and, to what extent, and under which conditions? Secondly, which policies are more effective than others? Model closures are simulated using different specifications of exogenous variables. Further, alternative policies are treated: human capital, price incentives, property rights and poverty reduction. In the African context, we show that while the prospects of environment-friendly economic development, i.e. a rising green GDP, are weak in the medium-run, under certain structural conditions there is a range of effective policies that resolves the conflict between economic growth and resource degradation, thus contributing to a rising green GDP.     

一个改进的金融CGE模型及在分析存款准备金率中的应用

本文对传统的CGE模型进行了扩展和改进,通过加入商业银行和中央银行两个部门以及对储蓄—投资的转化机制较为细致和系统的设定,构建了一个金融可计算一般均衡分析框架。在此分析框架下,我们建立了金融—社会核算矩阵（FSAM）,并以此为数据基础,模拟了存款准备金率变动对我国宏观经济、部门经济的冲击效果。模拟结果表明,存款准备金率的调整在一定程度上能够调控宏观经济,并且下调准备金率的政策效果比上调准备金率的政策效果更为明显。从调整存款准备金率对部门产出的影响看,在居民的固定投资方向仅为建筑业的假设下,建筑业对存款准备金率的反应最为敏感,其次为服务业和工业,而农业部门的政策反应相对较小。     

Economic consequences of intifada

In 2003 the World Bank (WB) and the International Monetary Fund (IMF) published estimates of macro-economic indicators for 2002 of the economy of Palestine. The WB used a micro-founded recursive dynamic computable general equilibrium (CGE) model, calibrated on the 1998 Social Accounting Matrix (SAM) of Palestine, to which shocks were applied, whereas the IMF based its estimates on a macro-founded income-expenditure model relying on more recent data. It turned out that there were substantial differences: the estimate by the WB of the real gross national income (at 1998 prices) was 25% less than the corresponding figure calculated by the IMF. This huge difference is not only relevant for a full understanding of the economic consequences of the intifada, but also for the size of the international community intervention. In this paper we propose our own evaluation with the help of a static CGE model, based on the 1998 SAM and the so-called intifada shock derived from data of the WB that we constructed for the analysis of some forms of emergency assistance in a previous article. It turns out that our estimates, based on an entirely different methodology, are remarkably close to those of the IMF.     

基于CGE模型天然气价格波动的传导效应

天然气在我国能源结构中有着重要的地位,天然气价格的变化会对我国经济和下游产业链产生重要的影响。论文利用CGE模型研究了我国天然气价格波动对我国宏观经济、居民福利和微观产业部门的影响,对不同的天然气价格冲击进行了情景模拟分析,研究表明:天然气价格波动对宏观经济变量和21个产业有很大的影响;在相同的价格波动下对不同产业的影响是不同的,与天然气产业关联度越大,其影响也就越大。在此基础上,对我国宏观经济政策和天然气价格改革提出了一些建议。     

An Application of an Integrated Transport Network– Multiregional CGE Model: a Framework for the Economic Analysis of Highway Projects

This paper develops a framework for the economic analysis of highway projects that is then used to estimate the dynamic economic effects of a highway project on the economic growth and the regional disparity in Korea. The framework is composed of a transport model and a multiregional Computable General Equilibrium (CGE) model. The transport model measures a change in interregional shortest distances and the accessibility due to the highway project. The CGE model estimates the spatial economic effects of the project on GDP, the price, exports, and the regional distribution of wages and population. The simulation allows policy makers to determine which highway development deserves the priority for investment, based on consideration of economic growth and regional economic equity in the long run. The simulation found that all the highway projects have positive effects on GDP and export growth as well as regional equity in terms of wage and population.     

人民币升值对中国制造业影响的动态CGE研究

本文设计四种不同的汇率升值情景,利用一个中国经济的动态CGE模型—MCHUGE模拟分析了人民币升值对我国制造业的影响。研究结果表明:在人民币汇率升值的过程中,各行业进出口量的增长具有缩小效应,且人民币汇率升值依然会使制造业各行业产值有所上升;在相同的进口替代弹性下,出口商品数量的减少与国内商品转换弹性正相关;当人民币汇率升值,食品、纺织、化工、金属、机械行业的国内商品价格增幅随进口替代弹性的增大而降低。     

COMPUTABLE GENERAL EQUILIBRIUM MODELS FOR DEVELOPMENT POLICY ANALYSIS IN LDCs

Abstract. The use of CGE models has gained much popularity among policy analysts in LDCs and there is a fast growing body of literature on this area of economics. In this survey, the advantages of general equilibrium approach over partial equilibrium approach in analysing a wide range of policy issues are highlighted. The evolution of CGE modelling is discussed and more than 60 CGE applications related to different policy issues in LDCs are surveyed. This comprehensive survey shows that the CGE models have become quite popular analytical tools among policy analysts in LDCs over the last decade or so. The debate in the economic profession regarding the value and appropriateness of using CGE models for policy analysis is examined in the final section of this paper. Some of the criticisms levelled at CGE models are discussed and it is argued that despite this criticism such models are capable of providing insight into important policy problems.     

EVALUATING SUPPLY-SIDE AND DEMAND-SIDE SHOCKS FOR FISHERIES: A COMPUTABLE GENERAL EQUILIBRIUM (CGE) MODEL FOR ALASKA

This study used computable general equilibrium (CGE) models to investigate the economic effects of three exogenous shocks to Alaska fisheries: (1) reduction in pollock allowable catch (TAC); (2) increase in fuel price; and (3) reduction in demand for seafood. Two different model versions, ‘Keynesian’ and ‘neoclassical’, were used to estimate impacts on endogenous output, employment, value added, and household income. By using a CGE model, this study overcomes the limitations of fixed-price models (such as input–output models) including (1) inability to calculate welfare effects due to fixed prices; and (2) difficulty of addressing supply-side shocks. There are currently few examples of CGE studies addressing fisheries issues appearing in the literature. Among those, this study is unique in that it uses a relatively disaggregated sector scheme and examines both supply-side and demand-side shocks.     

Impacts of Reduced Gaming Exports on the Economy of Nevada

Previous studies of gaming have not calculated numerically the negative, economy-wide impacts on the Nevada economy from potential expansion of the gaming industry outside of the state. This study uses a state-level, two-sector computable general equilibrium (CGE) model of Nevada to investigate such impacts. In the Nevada CGE, both commodity prices and factor prices are endogenously determined and the impacts on major economic variables such as output, employment, and government revenue are estimated. Three different model variants are specified. Each variant is based on different assumptions regarding intersectoral and interregional factor mobility to analyze model sensitivity. Results show that the impacts on Nevada of the nationwide expansion of gaming could be significant under reasonable assumptions about factor mobility for Nevada. Also, results for total regional output and total government revenue are found to be very sensitive to the alternative factor mobility assumptions.     

Trade Liberalization and Poverty in Ecuador: A CGE Macro-Microsimulation Analysis

Cross-country analysis of the aggregate growth-poverty link is likely to miss important country-specific detail and possible offsetting forces in the underlying labour market adjustment process. This paper combines a CGE model analysis with a microsimulations approach to analyse the effects of trade liberalization on poverty and income distribution in Ecuador. The CGE model enables us to disentangle the general equilibrium effects of various trade policy scenarios on sector output, employment, factor incomes and household consumption. However, as is typical of CGE models, this analysis only provides distribution results for fairly aggregated groups of workers and a reduced number of representative households. The microsimulations approach adds the full distribution to the analysis and allows simulation of the effects of trade reform on the job status and remuneration of individual workers and thereby on household income distribution and poverty. The macro- microsimulation results indicate that the trade opening in Ecuador induced mild aggregate welfare gains, but rising income inequality due to rising wage differentials between skilled and unskilled workers implies virtually no poverty-reducing effect from trade liberalization.     

STABILIZATION WITH WAGE INDEXATION AND EXCHANGE RATE FLEXIBILITY

Abstract. This survey examines the role of wage indexation and exchange rate policy in dampening fluctuations in output around its target level. It is demonstrated that the appropriate choice for wage indexation and exchange rate flexibility is highly sensitive to the nature and the relative importance of the shocks impinging upon the economy, as well as to the relevant parameters in the economy. Moreover, the question of the desired flexibility of the exchange rate should be studied in the context of wage indexation, and vice versa. This interdependence raises the possibility of both policies being complements or substitutes to each other depending on the number of shocks that perturb the economy.     

An Income Tax Increase to Fund Higher Education: A CGE Analysis for Chile

An increase in income taxes to fund education was one of the demands made by the social movements that emerged in Chile in 2011. Currently, the Chilean Congress is enacting a tax reform to raise money for higher education. This study aims to show the dynamic effects on the general equilibrium of the Chilean economy under two alternative approaches: a subsidy to lower the price of higher education (public and private), and greater spending on public higher education to reduce household payments for education. The social accounting matrix (SAM) used to calibrate the computable general equilibrium (CGE) model has 38 economic sectors, including the production structure of private education and public education. The study mainly concludes that a subsidy policy has significant advantages over increasing higher public education spending, regarding its effects on variables such as GDP, investment, and household incomes, while both policies have a similar effect on poverty and income distribution.     

Beware of breaks in exchange rates: Evidence from European transition countries

We endogenously search for the single most decisive structural break in exchange rate for a group of European transition countries under the hypothesis that structural breaks in exchange rates are driven by exchange rate policies. Detected breaks were frequently associated with major changes in exchange rate regime. However, several breaks were found not to be driven by exchange rate policies. By this token, the lack of coincidence between policy step and exchange rate regime shift hints at imperfect timing of exchange regime modification. Further, since a one time break can lead to inconsistent results, structural breaks in exchange rates should be accounted for in empirical research.     

Price distortion in the transition process: A CGE analysis of China's case

The correct evaluation of price distortion is a prerequisite for designing the correct price reform policy which is of tremendous importance in the transitions process from a centrally planned economy to a market economy. The purpose of this paper is to investigate the advantages and shortcomings of various criteria for evaluating price distortion. Based on the characteristics of a two-tiered planned-market system in Chinese economic reform, a computable general equilibrium (CGE) model has been built to evaluate quantitatively the degree of price distortion in the prevailing price system and the effects of price adjustments in order to propose a reasonable price reform policy. The difference between the planned price and the equilibrium price seems to be a better indicator for evaluating the degree of price distortion than others. Furthermore, this difference provides more accurate feedback for price reform policies in order to ensure a stable and controllable price reform process.