The measurement and trend of inequality: An amendment to a basic revision

A variety of revisions and adjustments to our standard measures of inequality have been proposed in recent years. This note corrects a serious error in that work which could reverse conclusions in instances of great inequality.     

The dangers of extended, but incomplete, accounting for measures of economic performance in a world of imperfect knowledge

The conventions currently employed by national statistical agencies for income and wealth accounting leave out many things relevant to economic performance and human well-being. This has lead to proposals for, and attempts at, more comprehensive accounting. Fully comprehensive accounting is impossible, and the question addressed in this paper is whether a fuller, but incomplete, accounting is guaranteed to be nearer to the truth than the conventional accounting. The answer to this question is ‘no’. In general, for example, we cannot be sure that ‘genuine saving’ would be more accurately measured by extending the list of assets that it covers. The paper sets out the conditions under which greater accuracy would be assured.     

当代成本会计理论发展的新趋势:资源消耗会计研究

21世纪初期,美国学者提出一种新的成本会计创新方法——资源消耗会计(RCA),它是由美国的作业成本法和德国的弹性边际成本法整合的产物,既反映了当今国际管理会计实务界的强烈需求,也是当代成本会计理论发展的新趋势。在资源消耗会计现有的研究成果的基础上,对相关理论研究与实务研究进行系统的总结与归纳,可以为资源消耗会计的进一步研究提供科学的依据。     

The measurement of inequality by components of income

Cowell (1977) considered the inequality by components of income (wages, property income, welfare, etc.). This note shows that this measurement problem can be elegantly handled in terms of informational inequality measures.     

Asset inequality over the life cycle

This note seeks to explain an interesting empirical regularity in the inequality of asset holdings stratified by the age of individuals. The regularity, which has evidently been overlooked, is that Gini coefficients of assets follow a U-shaped pattern over the life cycle. This pattern spans more than a century of diverse survey data from the United States. The theoretical explanation of the regularity is based on the hypothesis that inherited assets are intrinsically more unequal than accumulated savings, and that bequests are intrinsically more unequal than lifetime consumption. Shifts in the relative importance of inherited assets and bequest would then explain changes in the inequality of total assets.     

Wage inequality and skill supplies in a globalised world

We investigate empirically, and explain theoretically, how the relative wages of skilled and unskilled workers vary with their relative supplies in open economies. Our results combine the insights of simple labour market and trade models. In countries that trade, relative wages respond inversely to variation in skill supplies, but the response decreases with the degree of openness to trade and is small in very open countries. To reconcile our results with standard estimates of the elasticity of substitution between skilled and unskilled workers, we allow also for the influence of directed technical change and income elasticity of demand for skill-intensive goods.     

Overcoming environmental scarcity,inequality and structural imbalance in the world economy

The world economy faces two major threats: increasing environmental degradation and a growing gap between rich and poor. The root cause is that natural resources—or natural capital—is underpriced, and hence overly exploited, whereas human capital—the skills embodied in the workforce—is insufficient to meet demand. This outcome has three important consequences. First, all sectors of an economy will use too much natural resources relative to skilled labor. Second, the skilled workers throughout the economy will have higher real incomes and thus will be better off. Third, wealth inequality will increase, as the income gap between skilled and unskilled workers widens. Addressing this structural imbalance requires correcting the two underlying distortions, which are the chronic under-pricing of natural capital and the under-investment in human capital. This must be accompanied by a new suite of policies to provide improved incentives for more balanced wealth creation.     

The trend over time of the gender wage gap in Italy

We analyse gender wage gaps in Italy in the mid-1990s and in the mid-2000s. In this period, important labour market developments took place and they could have had a gender asymmetric impact on wages. We identify the time trends of different components of the gender wage gap across all the wage distribution. Although the unconditional gender wage gap remained roughly constant over time, we find that the component of the gap due to different rewards of similar characteristics deteriorated women’s relative wage. We show that especially women at the centre-top of the wage distribution swam against the tide: while the trend in female qualifications slightly reduced the gender wage gap, the gender-relative trends in the wage structure significantly increased it.     

Canadian wage inequality over the last two decades

We study the dispersion of wages of full-time full-year workers over two decades controlling for both education and experience. Applying non-parametric statistical methods we find statistically significant and large increases in inequality for males with low levels of education and experience coexist with more modest changes in inequality for those with average education and experience, and with actual declines in inequality for older, more experienced workers with a university degree. These relative patterns tend to be similar for females though with a stronger tendency towards inequality in each education-experience category. Given the recent focus in this debate on the issue of polarization, we also show graphs of the actual distributions of wages and analyze these to conclude that the groups experiencing increased dispersion do display what is commonly known as polarization though it would be an exaggeration to claim that the jobs in the middle of the distribution have vanished.     

Wealth inequality: Theory,measurement and decomposition

This paper reviews the basic principles of inequality measurement, underlining the advantages and shortcomings of alternative measures from a theoretical standpoint and in the context of the study of the distribution of wealth. Adopting the two most popular measures, the Gini index and the P‐shares, the paper documents wealth inequality in Canada using the 1999, 2005 and 2012 Survey of Financial Security (SFS). It carries out several decompositions with covariates, featuring DFL‐type reweighting methods and Gini and P‐shares RIF regressions. The latter parallel decompositions deepen our understanding of how changes in socio‐demographic characteristics, including the compensating role of family formation and human capital, impact wealth inequality.     

Variable factor shares, measurement and growth accounting

Recent evidence shows that factor shares are not constant. Consequently, growth accounting exercises rely on a false assumption and a measurement problem arises. We propose an empirical methodology to solve the measurement issue and estimate TFP growth.     

Inverse stochastic dominance,inequality measurement and Gini indices

We investigate the relationship between the third degree inverse stochastic dominance criterion introduced in Muliere and Scarsini (1989) and inequality dominance when Lorenz curves intersect. We propose a new definition of transfer sensitivity aimed at strengthening the Pigou-Dalton Principle of Transfers. Our definition is dual to that suggested by Shorrocks and Foster (1987). It involves a regressive transfer and a progressive transfer both from the same donor, leaving the Gini index unchanged. We prove that finite sequences of these transfers and/or progressive transfers characterize the third degree inverse stochastic dominance criterion. This criterion allows us to make unanimous inequality judgements even when Lorenz curves intersect. The Gini coefficient becomes relevant in these cases in order to conclusively rank the distributions.     

On the causes of increasing world poverty and inequality,or why the Matthew effect prevails

The purpose of this article is to analyse one of the very first European-level instances of trade union and social movement interaction in defence of the public sector, namely, the Coalition for Green and Social Procurement, an alliance of European trade unions and green and social non-governmental organisations (NGOs), and its campaign for an amendment of the new public procurement directives from 2000 to 2003. It will be examined to what extent this campaign was able to change the directives and counter neoliberal restructuring effectively as well as what the possibilities but also limits of trade union and social movement cooperation are as exemplified in this particular case study.     

The effect of measurement error on the estimated shape of the world distribution of income

This note examines the robustness that two modes exist in the world's density of per capita income. Our results suggest that this bimodal feature is robust and are arrived at using recently developed nonparametric deconvolution techniques.     

The subversive nature of inequality: Subjective inequality perceptions and attitudes to social inequality

This paper shows that higher levels of perceived wage inequality are associated with a weaker (stronger) belief into meritocratic (non-meritocratic) principles as being important in determining individual wages. This finding is further corroborated using various complementary measures of individuals’ perception of the chances and risks associated with an unequal distribution of economic resources, such as their perception of the chances of upward mobility. I finally show that those individuals perceiving a high level of wage inequality also tend to be more supportive of redistributive policies and progressive taxation. Taken together, these findings suggest that high levels of perceived wage inequality do have the potential to undermine the legitimacy of market outcomes.