We test the hypothesis that strategic interactions foster overconfidence. We experimentally compare an environment where players have an incentive to overstate their own ability to deter competitors, with one where this incentive is removed. We find that overconfidence persists in the former...

We provide a framework to uncover behavioural mechanisms driving potential cross-societal differences in voluntary cooperation. We deploy our framework in one-shot public goods experiments in the US and the UK, and in Morocco and Turkey. We find that cooperation is higher in the US and UK than...

This study provides evidence that strong kin networks are detrimental for democratic participatory institutions and that the medieval Catholic Church’s marriage regulations dissolved Europe’s clan-based kin networks which contributed to the emergence of participatory institutions. I show...

Schulz (2022) shows how weak kin networks contributed to the rise of participatory institutions and how the medieval Catholic Church marriage regulations prohibitions contributed to the process by destroying European clan-based kin networks. Three pieces of evidence construct the argument....