Dynamics and comparative statics in the theory of residential location

This paper introduces a dynamic adjustment mechanism of residential boundaries among a finite number of household classes in a circular city model. First we derive some meaningful conditions for all the residential boundaries to be locally stable. Then, assuming that the stability conditions are satisfied, we examine the comparative static properties of equilibrium boundary positions, e.g., the effects of changes in a land tax, an income subsidy, the number of households, etc.     

Perceptions of inequality

Individual perceptions of (income or wealth) inequality have strong effects on their decisions as economic agents or voters. It is therefore important to know more about the relation between perceived and measured inequality. We present a novel formal framework that is based on the assumption that people typically do not observe the entire income (wealth) distribution and that their guesses about the extent of inequality are based on “self-centered” reference groups. This framework predicts that perceptions of inequality will change along positions in the income distribution and that for a specific position various dimensions of inequality perception are related to each other. First, low (high) income individuals overestimate (underestimate) their own position. Second, subjective estimates of average earnings increase with the own income position. Third, high or low income people have different perceptions about the skewness and the “shape” of the income distribution (e.g. pyramid or diamond). Fourth, the subjective perception of inequality is lower for high-income individuals. Survey data from 40 countries provide strong support for the framework.     

CONCEPTS AND PROBLEMS OF CONSISTENCY IN TERMS-OF-TRADE ANALYSIS*

The debate on how to deal with changes of relative prices in national accounts has, so far, remained inconclusive, especially with regard to the question of how to measure gains from changes of terms of trade. Keeping the experiences of the 1970s in mind (i.e. substantial changes of relative prices sparked off by increased oil prices), this state of affairs is not considered tenable. On this background, the paper takes up the old debate on how to deflate figures of domestic product, total as well as by industries. It tries to argue that deflated figures should be presented not only as real product figures by industries (using the double deflation method), but also as real income figures, obtained by deflating the current-prices figures of a certain year by the same general price index. When this is done according to procedures spelled out in detail, gains/losses from changes of the terms of trade in foreign trade will show up as an integral part of the framework. In the paper, special attention is given to the concept of industry terms of trade. On the basis of simplifying assumptions (which are, however, relaxed in the final part of the paper), it is shown how the ratio of real income divided by real product of a certain industry will be proportionate to the terms of trade of the industry concerned, when the latter concept is defined in the appropriate way. Furthermore, the sum of the industry gains/losses from changes of their terms of trade will be equal to the gain/loss of the economy taken as a whole from changes of the terms of trade in foreign trade.     

The structure of income mobility: empirical evidence from five UE countries

In this paper we use the European Community Household Panel (ECHP) to assess differences in the level and structure of income mobility in a selected sample of European countries. We adopt recent theoretical proposals for the decomposition of axiomatic and welfare measurements of mobility in exchange, structural and growth components. Decomposition exercises which take into account some type of division of the population and income sources are also performed. We find that cross-country income mobility comparisons largely depend on the type of indices used. The relative positions of the countries considered change when the analysis is based on ethical instead of objective measures of income mobility. Results also show that in most countries income growth has a very limited effect upon aggregate mobility, being the most important determinant the rerankings of individuals, with a little weight for inequality changes. Although some common results exist concerning the delimitation of groups experiencing the greatest income fluctuations, such as individuals belonging to single-parent households or young household heads, the intensity of these results varies greatly across countries. The authors would like to acknowledge financial support from the Ministry of Science and Technology (grant SEJ2004-07373-c03-03) and the Instituto de Estudios Fiscales. We would also like to acknowledge the help given by the European Centre for Analysis in Social Sciences of the University of Essex.     

A panel data model for subjective information on household income growth

Subjective expectations about future income changes are analyzed, using household panel data. The models used are extensions of existing binary choice panel data models to the case of ordered response. We consider static models with random and fixed individual effects. We also look at a dynamic random effects model which includes a measure for permanent and transitory income. We find that income change expectations strongly depend on realized income changes in the past: those whose income fell, are more pessimistic than others, while those whose income rose are more optimistic. Expected income changes are also significantly affected by employment status, family composition, permanent income, and past expectations. Expectations are then compared to the head of household’s ex post perception of the realized income change for the same period. The main finding is that rational expectations are rejected, and that in particular, households whose income has decreased in the past underestimate their future income growth.     

中国教育发展、实际投资与实际收入的动态关系

本文在对中国教育发展和实际投资、实际收入的结构分析的基础上,运用中国1952-2004年的实际数据,首次运用协整和误差修正模型对中国人力资本的存量、实际收入和实际投资三变量之间的动态关系进行实证研究.结果显示:中国人力资本对实际收入和实际投资具有显著的正面效应,人力资本、实际收入与实际投资之间存在长期关系;基础教育是实际投资和收入的格兰杰原因;教育相对于实际投资而言在解释实际收入时占据更为重要的地位.     

Bargaining power, effective demand and technical progress: a Kaleckian model of growth

Following the Kaleckian tradition, this paper presents a demand-ledgrowth model in which the distribution of income is fully endogenised.This is done by introducing claims on income by workers andfirms. The bargaining power of these two groups affects, throughdistribution, the patterns of accumulation and inflation. Inturn, the bargaining power of workers is affected by the rateof change of employment. The paper discusses the model's static and dynamic implications,including the effects of exogenous and induced technical progress.The model confirms all the typical Kaleckian results, includingthe fact that increases in real wages may lead to acceleratingaccumulation as well as inflation. It also produces a new result:it is possible that an increase in the rate of change of labourproductivity may not lead to an increase in the rate of changeof employment.     

TERMS OF TRADE AND ECONOMIC GROWTH IN NINETEENTH CENTURY BRITAIN *

International trade and economic growth have been considered intimately linked in nineteenth century Britain. Conventional estimates of Britain's gross national product, however, fail to account for changes in the terms of trade and may be misleading indicators of changes in real income. Revised figures that incorporate terms of trade changes are presented here. One finding is that conventional estimates of GNP overstate growth in real income early in the century when the terms of trade deteriorated.     

Poverty and social exclusion: two sides of the same coin or dynamically interrelated processes?

There is growing interest in the analysis and measurement of social exclusion, to complement the static and dynamic literature on income poverty. On theoretical grounds, social exclusion and income poverty are seen as different processes, but with closely interrelated dynamics. However, our empirical understanding of the way these two processes dynamically interact at the individual level is still very limited. To shed some light on the issue, we use a dynamic bivariate probit model, controlling for unobserved heterogeneity and Wooldridge (2005)-type initial conditions. Both the first- and second-order Markov dynamics are examined. We estimate the model using the Italian sample of the European Community Household Panel (ECHP), waves 1–8, and find a sizable extent of state dependence in both poverty and social exclusion. Moreover, there are dynamic cross-effects implying that poverty and social exclusion are mutually reinforcing. Social policies aimed at eradicating poverty and avoiding individuals’ social and economic marginalization should take these interaction effects explicitly into account.     

Do birth order and family size matter for intergenerational income mobility? Evidence from Sweden

Previous studies of intergenerational income mobility have not considered potential birth-order or family-size effects in the estimated income elasticity. This article uses a large sample of individuals born between 1962 and 1964; income elasticities with respect to parents’ incomes are estimated for individuals with different birth-order positions and family sizes. Results based on labour income and total income for sons and daughters are reported separately. The elasticity tends to decrease with family size as well as with birth order for a given family size, especially in the labour-income analysis of fathers and sons.     

The Aggregation of Climate Change Damages: a Welfare Theoretic Approach

The economic value of environmental goods is commonly determined using the concepts of willingness to pay (WTP) or willingness to accept (WTA). However, the WTP/WTA observed in different countries (or between individuals) will differ according to socio-economic characteristics, in particular income. This notion of differentiated values for otherwise identical goods (say, a given reduction in mortality risk) has been criticized as unethical, most recently in the context of the 'social cost' chapter of the IPCC Second Assessment Report. These critics argue that, being a function of income, WTP/WTA estimates reflect the unfairness in the current income distribution, and for equity reasons uniform per-unit values should therefore be applied across individuals and countries. This paper analyses the role of equity in the aggregation of climate change damage estimates, using basic tools of welfare economics. It shows one way of how WTP/WTA estimates can be corrected in aggregation if the underlying income distribution is considered unfair. It proposes that in the aggregation process individual estimates be weighted with an equity factor derived from the social welfare and utility functions. Equity weighting can significantly increase aggregate (global) damage figures, although some specifications of weighting functions also imply reduced estimates. The paper also shows that while the postulate of uniform per-unit values is compatible with a wide range of 'reasonable' utility and welfare specifications, there are also cases where the common-value notion is not compatible with defensible welfare concepts.     

金融危机下中国经济系统的内外部冲击影响——基于虚实两部门一般均衡模型的研究及模拟测算

国际金融危机下的石油价格波动、财政金融政策、结构和技术变化等内外部冲击对中国经济系统的影响越来越受到政府部门和中外学者的密切关注.为了能从数量上把握冲击的直接和间接效果,文章基于一个实物部门与金融部门相统合的金融可计算一般均衡(CGE)模型,运用比较静态和比较动态的方法定量分析它们对中国经济的影响,并据模拟结果给出相关政策含义,从而为政策制定提供更充分的理论依据.     

An empirical analysis of income disparity and consumption in China

Using China’s provincial data from 1991 to 2005, this paper analyzes the impact of urban income disparity on their consumption based on static and dynamic panel data models and state space model. The GMM and Kalman Filter methods are used in the estimation and the variables such as income and price are controlled. The empirical results show that the elasticity of permanent income to consumption is much higher than that of temporary income; and the impact of income disparity on consumption is negative and substantial. A rise of 0.01 in the absolute value of Gini coefficient will cause a reduction of 0.35% in consumption on average. The effects fluctuate with the change of economic structure, consumption expectation and economic cycle. In the beginning years of 1990s, it is positive to enlarge income disparity moderately for consumption. It is the year of 1996 that the negative effect first appears in China. During 1998–2004, an increase of 0.01 to the absolute value of Gini coefficient will result in the reduction of consumption to fluctuate between 0.37% and 0.54%. In order to enlarge domestic demand and promote consumption, the focus should be the improvement of permanent income instead of temporary income, and the vigorous policies to reduce income disparity.     

创造性破坏与收入差距的振荡式扩大

本文试图运用熊彼特的技术创新和“创造性破坏”理论来解释收入差距振荡式扩大的动态特征。研究的结论是在以“创造性破坏”为特征的经济增长过程中,收入差距会扩大,而且创造性破坏的程度越强,经济增长速度越高,收入差距越大。其社会基础和原因是社会分工和阶层差异,这种差异会在经济增长过程中再度拉大。在方法上,本文用物理模型形象地描述了差距扩大过程,揭示了增长模型中定点状态分析方法的缺陷。对具体过程进行分析表明,收入差距扩大的方式为振荡式,这种振荡特征由个体和技术之间的动态竞争性质———“创造性破坏”决定。美国家庭收入的经验分析证实,在动态竞争的经济增长过程中,收入差距确实在振荡中扩大。     

Public Versus Private Provision of Public Goods

It is well known that public goods are underprovided in a static setting with voluntary contributions. Public provision—in a median voter framework with proportional taxation—generally exceeds private provision. This paper compares private and public provision of public goods in a dynamic setting. In a dynamic setting, voluntary donations can result in efficient provision. Also, majority‐rule solutions exist even when taxes are not proportional to income. At low discount factors, public provision tends to exceed private provision. As patience increases, however, private provision may exceed public provision. This occurs because many outcomes with a low level of public good provision—and potentially large targeted transfer payments to particular individuals—become sustainable under public provision. Under private provision, however, large targeted transfers are unsustainable. To finance the public good, private provision tends to result in benefit taxation, and public provision tends to result in progressive taxation.     

政绩考核、产业政策与社会结构——基于OLG框架的房地产一般均衡

本文基于OLG框架构建的房地产一般均衡模型,揭示了我国房地产市场泡沫背后的经济机制与政府行为。单一GDP考核使得地方政府存在扩大支出的强烈动机,为了解决财政缺口,地方政府会选择扶持房地产业的发展,这种对房地产业的过度扶持会扭曲消费者购买更多房产,从而推动房地产市场的价量齐升。基于这些结论,我们提出,中央政府可以从规制的角度出发,适当调整地方政府的考核目标,在原来的GDP单一目标的基础上考虑民众的收入水平以及收入平等目标。均衡分析表明,这种调整会改变地方政府扶持房地产的激励程度．从而有效控制房地产市场的发展。     

A CLASS OF PERFORMANCE‐BASED SUBSIDY RULES*

We consider a benchmark static incentive scheme, i.e. a per unit subsidy, that induces a monopoly to produce a target output level. We show that the same output level can be achieved by a continuum of dynamic subsidy rules based on a performance indicator. The rules require only local information. The present value of the subsidies paid is smaller than the amount paid under the static subsidy. Each of the dynamic subsidy rules results at each moment in a lower per unit subsidy than the static subsidy. The subsidy rate depends on a state variable that reflects the monopolist's performance history.     

THE MEASUREMENT OF REAL OUTPUT OF PUBLIC SECTOR SERVICES

Recently there has been discussion concerning the renewal of the volume measurements of public sector services. This renewal has been proposed e.g. in the recent United Nations Draft Manual on Public Sector Statistics. In the present paper we discuss some theoretical and practical problems connected with this renewal. According to some preliminary calculations concerning the Finnish educational sector, the new methodology might lead to a considerable revision of figures of output and labour productivity in the public sector. The revisions are of such a quantity that they might cause significant changes in the measurement of the volume of the total gross domestic product. This is a fact which may still require reflection before the new methodology is generally introduced, even though the revisions as such may be highly desirable from several aspects.     

INCOME AND THE HAMILTONIAN1

Among the many interpretations of real national income are (i) the return to national wealth and (ii) the Hamiltonian of an appropriately-chosen dynamic model of the economy. These interpretations are sometimes alleged to be equivalent and to constitute the self-evidently ideal definition to which statistics of real national income should conform as closely as possible., The allegation is correct on some very restrictive assumptions about technology and taste. Otherwise, these interpretations are inconsistent, inexpedient as definitions of real national income and significantly at variance with the usage in the national accounts. The return to wealth is unmeasurable with the currently-available data. The Hamiltonian is typically in the wrong units. It is an accurate reflection of neither productive capacity nor welfare in an intertemporal context. It is not well-defined in a tax-distorted economy. It is rarely an indicator of the return to wealth.

A personn's income is "the maximum value he can consume during a week and still be as well off at the end of the week as he was at the beginning"

J. R. Hicks²     

A dynamic analysis of expenditure patterns in rural India

Recent generalisations of the Linear Expenditure System have concentrated on its restrictive assumption of separable preferences but underplayed its equally restrictive assumption of linearity in income, i.e., constant marginal budget shares. This reflects the data base which has usually been long time series of disaggregated consumer expenditure data. Such generalisations are inappropriated for developing countries which rely on highly aggregated commodity expenditure data from budget surveys with more variation in income responses is introduced, variation in prices. A general procedure for non-linearising income but rather limited applied to some recent LES generalisations to generate still further geenralisations and then used to analyse rural India's expenditure behaviour. The results decisively support the suggested generalisation and, also, provide evidence in favour of dynamic behaviour and habit persistence on budget data.