Not everybody is benefiting equally from rising mean incomes. We discuss the mean-income population share (MPS), defined as the population share earning less than the mean income, as an indicator of how representative the mean income is for the mass of the population. This measure is both...

I use an unbalanced panel data to explore the correlation between aggregate income per capita and income inequality. A lot of studies document controversial results using the Gini index or other summary measurements of income inequality. I measure income inequality by the two dimensions of a...

Similar looking Lorenz Curves can imply very different income density functions and potentially lead to wrong policy implications regarding inequality. This paper derives a relation between a Lorenz Curve and the modality of its underlying income density: Given a parametric Lorenz Curve, it is...

The convergence debate of whether poorer countries are catching up with richer ones has recently focused on the concept of club convergence, hence convergence within groups of countries. Formally detecting club convergence in the distribution of countries' income per capita over time has,...

The commonly-used satellite images of nighttime lights fail to capture the true brightness of most cities. We show that night lights are a reliable proxy for economic activity at the city level, provided they are first corrected for top-coding. We present a stylized model of urban luminosity and...