This paper examines the social welfare bases of the measurement of income inequality among the inhabitants of the world. We develop a general family of global inequality indices which encompasses different concepts of global equity, from the cosmopolitan to the nationalist view. The analysis...

This working paper: (i) provides an overview of global, regional and national income inequalities based on the latest distribution data from the World Bank, UNU-WIDER and Eurostat; (ii) discusses the negative implications of rising income inequality for development; (iii) calls for placing...

This Article examines property law’s effect on economic inequality, particularly centered on Thomas Piketty’s findings in Capital in the Twenty-First Century. Piketty finds that when the rate of return on capital is greater than economic growth, capital concentrates among the wealthy,...

In many countries extreme poverty is unnecessary. Yet it persists. We propose a simple index, denoted the Miser index, to measure the extent to which societies have poverty in the midst of affluence. It builds on the generalized Lorenz curve, but can also be seen as a measure of polarization...

The majority of the world's poor, by income poverty and multi-dimensional poverty, now live in countries officially classified by the World Bank as middle-income countries. Of course nothing happens when a country crosses a (somewhat) arbitrary threshold in per capita income but it does matter...

What has happened to inequality between and within countries since 1990? In this paper we explore who have been the winners and losers from global growth since 1990. We find that falls in total global inequality in the last 30 years are predominantly attributable to rising prosperity in China....

The interplay of between- and within-country inequality, the relative contribution of each to overall global inequality, and the implications this has for who benefits from recent global growth (and by how much), has become a significant avenue for economic research. However, drawing conclusions...

This paper makes new estimates of global poverty and inequality in 2012 using both ‘old', 2005 and ‘new', 2011 purchasing power parity (PPP) price data in order to assess systematically what difference PPP data makes to the estimates. The methodology for the 2011 PPP data is thought to be...

The evaluation of development processes and of public policies often involves comparisons of social states that differ in income distributions, population sizes and life longevity. This may require social evaluation principles to be sensitive to the quality, the quantity and the duration of...

This paper focuses on the importance data issues to the analysis of growth, poverty and economic inequality. We introduce a number of major databases frequently used in applied research on growth, poverty and global and international inequality. A discussion of data quality, data consistency,...