In standard economic theory human beings are portrayed as selfish money-maximizing actors. This book investigates the conditions under which people deviate from this prediction and when they are prepared to contribute to the common good in a more altruistic fashion. Based on field experiments...

The exogenous manipulation of choice architectures to achieve social ends ('social nudges') can raise problems of effectiveness and ethicality because it favors group outcomes over individual outcomes. One answer is to give individuals control over their nudge ('self-nudge'), but the trade-offs...

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...