An optimal linear world income tax that maximizes a border-neutral social welfare function provides a drastic reduction in world consumption inequality, dropping the Gini coefficient from 0.69 to 0.25. In contrast an optimal decentralized (i.e., within countries) redistribution has miniscule...

Using cross-sectional data from 93 countries, we investigate the relationship between the desired level of redistribution among citizens from different socioeconomic backgrounds and the actual extent of government redistribution. Our focus on redistribution arises from the inherent class...

This paper estimates the global prevalence of social trust and generosity among immigrants. We combine individual and national level data from immigrants and native-born respondents in more than 130 countries, using seven waves of the Gallup World Poll (2005-2012). We find that migrants tend to...

This paper presents a new set of stylized facts about the global variation in universalism, leveraging hypothetical money allocation tasks deployed in representative samples of 64,000 people from 60 countries. Our data reveal large variation in universalism within and across countries, which...

Models of endogenous economic growth can generate long-term growth without relying on exogenous changes in technology or population. A general feature of these models is the presence of constant or increasing returns in the factors that can be accumulated. I use some models of this type to study...

We consider public debt from a long-term historical perspective, showing how the purposes for which governments borrow have evolved over time. Periods when debt-to-GDP ratios rose explosively as a result of wars, depressions and financial crises also have a long history. Many of these episodes...