Parochial altruism – individual sacrifice to benefit the in-group and harm an out-group –undermines inter-group cooperation and is implicated in a plethora of politically-significant behaviors. We report experimental evidence about the impact of variation in social distance within the...

Cooperativeness among genetically unrelated humans remains a major puzzle in the social sciences. We explore the causal impact of physical distance on willingness to help. In a field setting, participants decide about supporting local refugees at the dispense of money to themselves. We vary...

he gegravity Python package is a collection of tools for analyzing general equilibrium, structural gravity models of international trade. It provides a framework for estimating structural gravity models, simulating counterfactual trade experiments, and conducting Monte Carlo simulations to...

Using a sample of 20 OECD countries it is shown that the majority of countries decreased the level of intragenerational redistribution in the first pillar of their pension systems, though the evidence is weak in statistical terms. We find strong correlations between changes of the so-called...