Shekhar Aiyar, Christian Ebeke, 03 April 2019

There are contrasting theories on the relationship between income inequality and growth, and the empirical evidence is similarly mixed. This column highlights the neglected role of equality of opportunity in mediating this relationship.  Using the World Bank’s new Global Database on Intergenerational Mobility, it shows that in societies where opportunities are unequally distributed, income inequality exerts a greater drag on growth. 

Gustavo A. Marrero, Juan Gabriel Rodríguez, Roy Van der Weide, 08 February 2017

Inequality can be both good and bad for growth. Unequal societies may be holding back one segment of the population while helping another. This column exploits US data to argue that inequality affects negatively the future income growth of the poor and positively that of the rich. This relationship is largely driven by inequality of opportunity, which limits the growth prospects at the bottom of the income distribution.  

Branko Milanovic, 06 May 2015

Our level of income is unarguably dependent on where we live in the world. But evidencing this is tricky. This column presents a model that explains global income variability using one variable only – where you live. The results suggest that we might want to reassess how we think about both economic migration and global inequality of opportunity.

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