Inequality is getting more attention in efforts to monitor development progress. Alongside established measures of poverty and human development there have been calls for monitoring inequality. How should this be done?

We focus here on just one aspect of inequality, though an important aspect, namely the inequality of consumption or income. This is about “inequality of results” not “inequality of opportunities,” which may be more important but is much harder to measure. And there are other dimensions of inequality that matter, such as inequality in access to health and education services.  But this is the obvious place to start.