One often heard counter to the concern on rising income and wealth inequality is that it is wrong to focus on inequality of outcomes in a “snapshot.” Intergenerational mobility and “equality of opportunity”, so the argument goes, is what matters for normative evaluation. In response to...

The academic literature on equality of opportunity has burgeoned. More recently, the concepts and measures have begun to be used by policy institutions, including in specific sectors like health and education. Indeed, it is argued that one advantage of focusing on equality of opportunity is that...

This paper is a review of the post-war literature on income distribution and development. It argues that the literature has cycled from one consensus to another, responding to emerging policy issues and new analysis. On the basis of the review, the paper identifies five areas that will command...

Income and wealth inequality rose over the first 150 years of US history. They rose in Britain before 1875, especially 1740–1810. The first half of the 20th century equalized pre-fisc incomes both in Britain and in America. From the 1970s to the 1990s inequality rose in both countries,...

The world economy has become more unequal over the last two centuries. Since within- country inequality exhibits no ubiquitous trend, it follows that virtually all of the observed rise in world income inequality has been driven by widening gaps between nations, while almost none of it has driven...

Is inequality largely the result of the Industrial Revolution? Or, were pre-industrial incomes and life expectancies as unequal as they are today? For want of sufficient data, these questions have not yet been answered. This paper infers inequality for 14 ancient, pre-industrial societies using...