The study of inequality, particularly since the second half of the twentieth century, has been marked by a considerable degree of fragmentation. The diverse concerns of economic, social, political, ecological and several other inequalities are usually addressed with the skills of very different disciplines. A significant portion of the work of economists has been on the measurement of poverty while political scientists may be more interested in the politics of redistribution These divergent interests influence the choice of indicators of inequality: economists have tended to focus almost entirely on income or wealth,2 even as the study of affirmative action has concentrated on representation in educational and political ins...