Frank Cowell

• PhD
• London School of Economics and Political Science

Unlabelled: We study individual aversion to health and income inequality in three European countries (the United Kingdom, Germany, and Italy), its determinants and especially, the effects of exposure to three types of COVID-19 specific shocks affecting individuals' employment status, their income and health. Next, using evidence of representative...

To compare income and wealth distributions and to assess the effects of policy that affect those distributions require reliable inequality‐measurement tools. However, commonly used inequality measures such as the Gini coefficient have an apparently counter‐intuitive property: income growth among the rich may actually reduce measured inequality. We...

Approaches to measuring health inequalities are often problematic because they use methods that are inappropriate for categorical data. In this paper we focus on “pure” or univariate health inequality (rather than income-related or bivariate health inequality) and use a concept of individual status that allows a consistent treatment of such data. W...

The association of insurance expansions and the distribution of health status is still a matter we know little about. This paper draws upon new measures of pure (univariate) inequality and mobility which accommodate categorical data to understand how an expansion of public insurance may be related to both health inequality and mobility. These measu...

Although measures of sensitivity to inequality are important in judging the welfare effects of health-care programmes, it is far from straightforward how to elicit them and apply them in health-care decision-making. This paper provides an overview of the literature on the measurement of inequality aversion, examines some of the features specific of...

The USA and the UK experienced substantial increases in net wealth in the decade that preceded the financial crisis, largely driven by house-price booms in each country. The distribution of these gains across households led to a slight increase in wealth inequality in the USA but a substantial fall in inequality in the UK. We use a decomposition te...

Although it is heartening to see wealth inequality being taken seriously, key concepts are often muddled, including the distinction between income and wealth, what is included in "wealth", and facts about wealth distributions. This chapter highlights issues that arise in making ideas and facts about wealth inequality precise, and employs newly-avai...

The standard theory of inequality measurement assumes that the equalisand is a cardinal quantity, with known cardinalization. However, one often needs to make inequality comparisons where either the cardinalization is unknown or the underlying data are categorical. We propose an alternative approach to inequality analysis that is rigorous, has a na...

The measurement of health inequalities usually involves either estimating the concentration of health outcomes using an income-based measure of status or applying conventional inequality-measurement tools to a health variable that is non-continuous or, in many cases, categorical. However, these approaches are problematic as they ignore less restric...

How important is spatial identity in shifting preferences for redistribution? This paper takes advantage of within-country variability in the adoption of a single currency as an instrument to examine the impact of the rescaling of spatial identity in Europe. We draw upon data from the last three decades of waves of the European Values Survey and we...

We survey the issues involved in comparing wealth distributions and measuring wealth inequality with illustrations from the Eurosystem Household Finance and Consumption Survey.

The measurement of health inequalities usually involves either es­timating the concentration of health outcomes using an income-based measure of status or applying conventional inequality-measurement tools to a health variable that is non-continuous or, in many cases, categorical. However, these approaches arc problematic as they ignore less restri...

How important is spatial identity in shifting preferences for redistri-bution? This paper takes advantage of within-country variability in the adoption of a single currency as an instrument to examine the impact of the rescaling of spatial identity in Europe. We draw upon data from the last three decades of waves of the European Values Survey and w...

The evidence on rank and income mobility in China reveals an important change around the year 2000. Using panel data from the China Health and Nutrition Survey we show that rank mobility fell markedly from the decade immediately preceding the millennium to the decade immediately following: in this respect China is becoming markedly more rigid. By c...

We survey the issues involved in comparing wealth distributions and measuring wealth inequality with illustrations from the Eurosystem Household Finance and Consumption Survey.

The world seems to have discovered a new problem: economic inequality. But inequality is not something freshly appeared on the world stage.

When forming their preferences about the distribution of income, rational people may be caught between two opposite forms of “tyranny.” Giving absolute priority to the worst-off imposes a sort of tyranny on the rest of the population, but giving less than absolute priority imposes a reverse form of tyranny where the worst-off may be sacrificed for...

I examine the idea of 'the long run' in Piketty (2014) and related works. In contrast to simplistic interpretations of long-run models of income-and wealth-distribution Piketty (2014) draws on a rich economic analysis that models the intra-and inter-generational processes that underly the development of the wealth distribution. These processes inev...

This Chapter is about the techniques, formal and informal, that are commonly used to give quantitative answers in the field of distributional analysis - covering subjects including inequality, poverty and the modelling of income distributions. It deals with parametric and non-parametric approaches and the way in which imperfections in data may be h...

This Chapter is about the techniques, formal and informal, that are commonly used to give quantitative answers in the field of distributional analysis - covering subjects including inequality, poverty and the modelling of income distributions. It deals with parametric and non-parametric approaches and the way in which imperfections in data may be h...

Social identity has become accepted as a key concept underpinning the endogeneity of economic behaviour and preferences. It is important in explaining attitudes towards redistribution and pro-social behaviour. We examine how economic theory measures social identity and its effects on preferences towards redistribution, social solidarity and redistr...

Is there a trade-off between people’s preference for income equality and income mobility? Testing for the existence of such a trade-off is difficult because mobility is a multifaceted concept. We analyse results from a questionnaire experiment based on simple precise concepts of income inequality and income mobility. We find no direct trade-off in...

The connections between inequality and social outcomes are complex; there may be several causal mechanisms and in some instances the causal link is in the reverse direction: This chapter focuses on reviewing the analytical evidence on the possible ways in which the impact of inequality is transmitted onto outcomes in health, housing and intergenera...

Much of the theoretical literature on inequality assumes that the equalisand is a cardinal variable like income or wealth. However, health status is generally measured as a categorical variable expressing a qualitative order. Traditional solutions involve reclassifying the variable by means of qualitative models and relying on inequality measures t...

We investigate a general problem of comparing pairs of distributions which includes approaches to inequality measurement, the evaluation of “unfair” income inequality, evaluation of inequality relative to norm incomes, and goodness of fit. We show how to represent the generic problem simply using (1) a class of divergence measures derived from a pa...

The relationship between income inequality and economic growth has been widely studied,leading to a controversial debate. Regarding the effect of economic growth on inequality, Kuznets’ inverted- U hypothesis (1955) suggests that inequality first rises with growth and then falls after a turning point. This model has been extended by Anand and Kanbu...

Personal wealth in the UK totalled £5.5 trillion by 2010 (£9-10 trillion if occupational pension rights are included). Inheritance flows are now equivalent to 4 per cent of national income each year. All households in the wealthiest tenth have more than 75 times the wealth of any of those in the bottom tenth. Absolute differences in wealth levels h...

There is considerable cross-country variation in levels of household wealth and in wealth inequality. This paper assesses the extent to which these differences can be accounted for by differences in the distributions of households' demographic and economic characteristics. A counterfactual decomposition analysis of micro data from five countries (I...

The relationship between income inequality and economic growth has been widely studied, leading to a controversial debate. Regarding the effect of economic growth on inequality, Kuznets' inver-ted-U hypothesis (1955) suggests that inequality first rises with growth and then falls after a turning point. This model has been extended by Anand and Kanb...

In this paper we compare the level, composition and distribution of household wealth in five industrial countries: the UK, US, Italy, Finland and Sweden. We exploit the harmonized data within the Luxembourg Wealth Study, which we have extended to allow us to examine trends in the UK and the US between the mid-1990s and the mid- 2000s. Remaining dif...

We examine the role of taxation within a simple model of wealth accumulation transmission from generation to generation. It turns out that the role of bequest taxation may be central to the development of inequality in the long run. Whether it does so depends on the the way that consumption behaviour by each generation is determined.

We show how classic source-decomposition and subgroup-decomposition methods can be reconciled with regression methodology used in the recent literature. We also highlight some pitfalls that arise from uncritical use of the regression approach. The LIS database is used to compare the approaches using an analysis of the changing contributions to ineq...

An axiomatic approach is used to develop a one-parameter family of measures of divergence between distributions. These measures can be used to perform goodness-of-fit tests with good statistical properties. Asymptotic theory shows that the test statistics have well-defined limiting distributions which are however analytically intractable. A paramet...

Using the evidence from the Luxembourg Wealth Study it appears that the distribution of wealth in the UK is considerably less than in Canada, the US or Sweden. But does this result come from an underestimate of inequality among the wealthy and of the wealth differential between the rich and the rest? Using a Pareto model for the upper tail of the d...

Specific functional forms are often used in economic models of distributions; goodness-of-fit measures are used to assess whether a functional form is appropriate in the light of real-world data. Standard approaches use a distance criterion based on the EDF, an aggregation of differences in observed and theoretical cumulative frequencies. However,...

Our new approach to mobility measurement involves separating out the valuation of positions in terms of individual status (using income, social rank, or other criteria) from the issue of movement between positions. The quantification of movement is addressed using a general concept of distance between positions and a parsimonious set of axioms that...

Firms are usually better informed than tax authorities about market conditions and the potential profits of competitors. They may try to exploit this situation by underreporting their own taxable profits. The tax authority could offset firms' informational advantage by adopting "smarter" audit policies that take into account the relationship betwee...

Starting from the axiomatization of polarization contained in Esteban and Ray (1994) and Chakravarty and Majumder (2001), we investigate whether people's perceptions of income polarization are consistent with the key axioms. This is carried out using a questionnaire–experimental approach that combines both paper questionnaires and on-line interacti...

If the rich just get richer and the poor get poorer, the answer might seem easy. But what if the income distribution changes in a complicated way? Can we use mathematical or statistical techniques to simplify the comparison problem in a way that has economic meaning? What does it mean to measure inequality? Is it similar to National Income? Or a pr...

We address a puzzle in welfare economics - the possibility that rational people may be simultaneously against two apparently con‡icting forms of "tyranny." In fact the two types of tyranny can be reconciled but at the possible cost of con‡ict with other standard welfare principles. We examine whether such con‡icts do arise using a questionnaire-exp...

We show how classic source-decomposition and subgroup-decomposition meth ods can be reconciled with regression methodology used in the recent liter ature. We also highlight some pitfalls that arise from uncritical use of the regression approach. The LIS database is used to compare the approaches using an analysis of the changing contributions to in...

Specific functional forms are often used in economic models of distributions; goodness-of-fit measures are used to assess whether a functional form is appropriate in the light of real-world data. Standard approaches use a distance criterion based on the EDF, an aggregation of differences in observed and theoretical cumulative frequencies. However,...

We provide a parsimonious axiomatisation of the complete class of absolute inequality indices. Our approach uses only a weak form of decomposability and does not require a priori that the measures be differentiable.

According to standard theory founded on Harsanyi (J Polit Econ 61:434–435, 1953; 63:309–321, 1955) a social welfare function can be appropriately based on the individual’s approach to choice under uncertainty. We investigate how people really do rank distributions in terms of welfare. According to Harsanyi, the evaluation can be done from the stand...

It is known from the literature on uncertainty that in cases where individuals express a preference for a high win-probability bet over a bet with high winnings they nevertheless will bid more to obtain the bet with high winnings. We investigate whether a similar phenomenon applies in the parallel social-choice situation. Here decisions are to be m...

This article provides an overview of the key issues in inequality measurement and shows how theoretical concepts are related to practical judgements. The principal axioms of distributional analysis are used to show the social-welfare underpinnings of standard ranking principles and to derive families of inequality indices. Recent developments that...

We show how classic source-decomposition and subgroup-decomposition methods can be reconciled with regression methodology used in the recent literature. We also highlight some pitfalls that arise from uncritical use of the regression approach. The LIS database is used to compare the approaches using an analysis of the changing contributions to ineq...

The topic of redistribution is sometimes interpreted narrowly in rather dry terms: as the description and quantification of the simple fact of change in an income or wealth distribution. This can apply both to an actual change that takes place through time and also to the apparent alteration of the distribution at a point in time by taxes and trans...

It was fortunate for the economics profession that the schoolboy Champernowne, a keen and able mathematician, was advised to read something in the school library to broaden his horizons: he chose Marshall’s Principles.

The potential impact of smart cards is examined in the context of a standard model of direct and indirect taxation. The distinction between the two types of tax is made in terms of the information required to implement them. Electronic cards in general are understood as devices for enriching and certifying information related to individuals and tra...

We examine individuals’ distributional orderings in a number of contexts. This is done by using a questionnaire-experiment that is presented to respondents in any one of seven “flavors” or interpretations of the basic distributional problem. The flavors include inequality, risk, social welfare and justice. KeywordsSocial welfare–Inequality–Justice...

What are the principal issues on which research on income distributionand inequality focus? How might that focus shift in the immediate future?Prepared for the The Elgar Handbook of Socio-Economics.

We examine individuals' distributional orderings in situations involving (a) comparisons of social welfare and (b) choice under uncertainty. There is a special focus on whether these orderings satisfy the principle of transfers (the principle of mean-preserving spreads). The results are compared with those of earlier work that was conducted in the...

One of the most interesting practical applications of inequality measures is the decomposition by population subgroups of overall income inequality. This analysis typically focusses on the ‘contributions to inequality’ from different subgroups of the population and - explicitly or implicitly - uses a structure of the form

Starting from the axiomatisation of polarisation contained in Esteban and Ray (1994)and Chakravarty and Majumdar (2001) we investigate whether people's perceptionsof income polarisation is consistent with the key axioms. This is carried out using aquestionnaire-experimental approach that combines both paper questionnaires and onlineinteractive tech...

In this paper we examine the concept of "vulnerability" (Townsend 1994) within thecontext of income mobility of the poor. We test for the dynamics of vulnerablehouseholds in the UK using Waves 1 - 12 of the British Household Panel Survey andfind that, of three different types of risks that we test for, household-specific shocksand economy-wide aggr...

We examine the statistical performance of inequality indices in the presence of extreme values in the data and show that these indices are very sensitive to the properties of the income distribution. Estimation and inference can be dramatically affected, especially when the tail of the income distribution is heavy, even when standard bootstrap meth...

Lorenz curves and second-order dominance criteria, the fundamental tools for stochastic dominance, are known to be sensitive to data contamination in the tails of the distribution. We propose two ways of dealing with the problem: (1) Estimate Lorenz curves using parametric models and (2) combine empirical estimation with a parametric (robust) estim...

Our purpose is to examine the “envy” within the context of income inequality measurement. We use a simple axiomatic structure that takes into account “envy” in the income distribution. The concept of envy incorporated here concerns the distance of each person's income from his or her immediately richer neighbour. We derive two classes of inequality...

Modelling Lorenz curves (LC) for stochastic dominance comparisons is central to the analysis of income distribution. It is conventional to use non-parametric statistics based on empirical income cumulants which are in the construction of LC and other related second-order dominance criteria. However, although attractive because of its simplicity and...

This paper investigates the impact of international migration on technical efficiency, resource allocation and income from agricultural production of family farming in Albania. The results suggest that migration is used by rural households as a pathway out of agriculture: migration is negatively associated with both labour and non-labour input allo...

This article provides a brief overview of the key issues in inequality measurement andhas been prepared for inclusion in the second edition of The New Palgrave.