THE INCOME UNIT AND THE ANATOMY OF INCOME DISTRIBUTION*

This paper focuses on a neglected aspect of the treatment of the income unit in the construction of size distributions of income. If the size distribution is to be an indicator of the distribution of economic welfare, and if the economic welfare of each individual in society is to count equally, then conventional distributions are inconsistent with individualistic welfare functions. We estimate size distributions with each person's welfare weighted equally, and contrast these results with those weighting each household unit's welfare equally. The choice of weights is shown to affect both the level and the trend in income inequality.     

SHORT-CUT ESTIMATES OF REAL INCOME

The United Nations International Comparisons Project (ICP) has conducted in-depth purchasing-power parity (PPP) studies of the so-called "benchmark" countries (of which there were 34 in the 1975 sample). In the absence of PPP studies of the rest of the countries in the world, the ICP team has constructed "short-cut" estimates of real income (that is, income converted from domestic currency to dollars at PPP) for the nonbenchmark countries. The idea of a "short-cut" procedure for estimating real income is to run a regression of real income on nominal income (that is, income converted from domestic currency to dollars at a market exchange rate) and other variables among the benchmark countries and then to use this regression to estimate real income for the nonbenchmark countries. The most recent ICP short-cut estimates have been based on regressions of real income on nominal income and the foreign trade ratio. The present study expands the list of candidate variables that might be included in a short-cut regression. The list includes educational attainments, the share of minerals in GDP, the trade balance, the growth of the money supply, tourist receipts, and the share of nontradables in GDP. The theory underlying the inclusion of each of these variables is discussed. Regressions are run with various combinations of these variables and some short-cut estimates of real income for 76 market economies are presented.     

THE MEASUREMENT OF REAL INCOME

This paper is about the theory of the measurement of real income. By "theory of measurement" I mean the characterization of statistical terms as variables in a model, just as real consumption is characterized as an indicator of utility and the consumer price index is characterized as the cost of attaining a given level of utility in the economic theory of index numbers developed by Konus, Frisch and others half a century ago. I identify five logically distinct and internally-consistent concepts of real income: maximum sustainable consumption, consumption plus the output of new capital goods, consumption plus the increase in the capital stock where capital can be measured in two quite separate ways, and the sum of actual consumption and consumption forgone in the investment process. The last of these concepts is the most appropriate as a guide to producing long time series of real income for measuring a country's rate of economic growth.     

THE MEASUREMENT OF INCOME SEGREGATION

We examine the problem of measuring the extent to which students with different income levels attend separate schools. Unless rich and poor attend the same schools in the same proportions, some segregation will exist. Since income is a continuous cardinal variable, however, the rich–poor dichotomy is necessarily arbitrary and renders any application of a binary segregation measure artificial. This article provides an axiomatic characterization of a measure of income segregation that takes into account the cardinal nature of income. This measure satisfies an empirically useful decomposition by subdistricts.     

EFFECTS OF PERSONAL INCOME TAX ON INCOME DISTRIBUTION: EXAMPLE FROM BULGARIA

This study utilizes the 1992 Bulgarian household budget survey to analyze the distribution of income and income tax burden. Results indicate that the country is characterized by low income inequality, though this is changing rapidly. The findings also show that the present income tax system is progressive and that the urban sector pays much more relative to its income. Despite a steeply graduated statutory tax rate schedule, effective progression is rather modest, indicating significant tax evasion. However, one must view the results of progressivity and urban bias cautiously. As in-kind income becomes monetized and as the economy becomes more market-oriented, both progressivity and urban/rural differences will wane over time.     

THE MEASUREMENT OF INCOME DISTRIBUTION DYNAMICS WHEN DEMOGRAPHICS ARE CORRELATED WITH INCOME

We show how to account for differentials in demographic variables, in particular mortality, when performing welfare comparisons over time. The idea is to apply various ways of "correcting" estimated income distribution measures for "sample selection" due to differential mortality. We distinguish the direct effect of mortality, i.e. individuals who die leave the population and no longer contribute to monetary welfare, from the indirect effect, i.e. the impact on survivors in the deceased's household who may experience a decrease or increase in monetary welfare. In the case of Indonesia, we show that the direct and indirect effects of mortality on income distribution have opposite signs, but are roughly the same in magnitude. Moreover, the effects of other demographic changes dominate the effects of mortality, whether direct or indirect. However, in the post-crisis period these demographic changes also explain a substantial part of the overall change in the distribution of income.     

DISTRIBUTIONS OF REAL INCOME: WITHIN COUNTRIES AND BY WORLD INCOME CLASSES

Income and expenditure data from 14 countries (representing one-third of the world's population), mostly from the 1970s, are used to construct national income distributions and , after normalizing by purchasing power parities, to construct a "world" distribution of real income. The density of real-income equivalent groups (socio-economic classes) across countries is measured for the "affluent," the "well-off," and the "poor." In comparison with earlier studies, most national distributions of income seem to have been improving, the numbers of those in poverty (based on real income) are lower, and, most important (and disturbing for some) is that the "affluent" class (and those above "middle class" income levels) has (prematurely) swelled in a number of developing countries.     

消费函数的收入阶层假说

本文基于经典消费函数的两个基本变量，融合收入分配理论，构建消费函数的收入阶层假说。这一假说为政府制定扩大居民消费的政策措施提供了理论依据。     

THE WEALTH EFFECTS OF INCOME INSURANCE

Precautionary savings models suggest that wealth should rise with income risk. Risk is reduced by means-tested transfers, however, which implies that transfer programs should discourage private wealth accumulation. We offer a comprehensive empirical assessment based on variation across states in the generosity of a number of programs, specifically unemployment insurance and means-tested transfers (Aid to Families with Dependent Children and Food Stamps). We use monthly data on married couples from the Survey of Income and Program Participation (SIPP) to regress wealth on income, income risk, and various measures of transfer generosity. The results support the precaution-ary savings model and reveal moderate negative wealth effects of both unemployment insurance and means-tested transfers, with an elasticity of about −0.18.     

STUDIES OF INCOME REDISTRIBUTION IN DENMARK

Income redistribution studies on the macro–economic level have been undertaken in Denmark for the years 1938–39, 1949, 1955, and 1963. By use of national accounts figures and all other available statistics, it was on certain assumptions possible to distribute public sector income and expenditure by income groups.
A quite different approach is used in a Danish redistribution study on the micro-economic level for 1971, which relies solely on the comprehensive data from the family budget survey for that year. Unfortunately this study only relates to employee households.
This paper deals with the 1963 and 1971 studies. First it describes and discusses the differences in methodology between the two studies and indicates some ideas for future studies in this field in Denmark. In the following sections some main results of the two studies are given, briefly for the 1963 study and more comprehensively for the 1971 study. The studies show the great and growing strength of the policy of redistribution through public sector income and expenditure in Denmark.
It is the opinion of the authors that the appearance of redistribution studies based on comprehensive family budget surveys makes for a substantial improvement of redistribution figures, and that the purely micro-level frame of reference makes it possible to interpret the results in a more satisfactory way than before. Furthermore, the appearance of detailed input-output based national accounts data should bring about further improvements in redistribution figures through better data on indirect taxes and subsidies as well as supporting data which are necessary to link the micro and macro levels in a consistent way.     

THE SIZE DISTRIBUTION OF INCOME IN LIBERIA

The economy of Liberia is one in which, in spite of past satisfactory growth performance, a high level of income inequality persists. In 1977, for instance, a mere 2 percent of the people accounted for some 33 percent of nation-wide wage income. These people live disproportionately in Montserrado County in which the capital city is located. While each of the other counties are largely rural and poor, each has far lower intra-county inequality than wealthy Montserrado.
Intersectoral location of the income-earner, average income levels and the extent of access to human capital formation opportunities are some characteristics of the economy that have been found to explain significant portions of intercounty variations in the levels of household income concentration. Income inequality is reduced with increases in the extent of agricultural activity as the share of the top income group falls and that of the bottom group rises. The reverse happens with growing urban-area activity. Higher income concentration occurs with rising per capita incomes as the top group's income share rises and the bottom income group's share falls. While this appears to be an instance of the Kuznet U-shaped hypothesis, here there are no definite signs of a possible reversal any time soon. The levels of access to educational facilities move inversely with the level of inequality, with expanding elementary facilities benefiting the poorer people at the expense of the wealthy while the reverse happens in the case of expanding secondary educational facilities.     

THE SIZE DISTRIBUTION OF INCOME DURING INFLATION

This paper analyzes the effects of inflation on the size distribution of income, making use of a microsimulation model. It goes beyond earlier analyses not only in the use of microdata but also in the types of inflation modeled. Two different income concepts are used, one the money income concept of the U.S. Census Bureau and the second, called Accrued Comprehensive Income, based on the concept of income as consumption plus the change in net worth. The results of the simulation inflations are presented graphically, as the ratio of real income with inflation to real income without, by income class. The analysis concludes that the income concept chosen is crucially important. While low income households suffer modest losses and middle income households are largely unaffected, whatever income concept is used, the effects on upper income households are extremely sensitive. With a simple money income concept, the well-to-do appear to benefit from inflation but a broader concept reverses this effect. A policy to negate the distributional effect of inflation would benefit primarily the upper income households. Similarly, macroeconomic policies designed to reduce inflation at the price of slower growth and greater unemployment would not aid lower income groups to a significant degree.     

网络产业收入监管激励问题研究

对具有自然垄断特性的网络产业,各国都对其收入实施严格的监管。而如何采取具有激励作用的收入监管,历来是经济学家研究的重点。对该方面进行的综述性研究表明,在不对称信息存在的情况下,采取基于成本的收入监管机制,监管机构不得不对低效率企业的产出进行扭曲,同时高效率企业获得信息租金;而采取基于价格的收入监管机制,在考虑了企业的努力程度时,低效率企业的努力程度将受到向下的扭曲,同时高效率企业获得信息租金。分析还表明,在基于价格的收入监管机制下,价格机制的选取和激励问题可以分开考虑。