Conditional bribery: Insights from incentivized experiments across 18 nations.

Bribery, a grand global challenge, often occurs across national jurisdictions. Behavioral research studying bribery to inform anticorruption interventions, however, has merely examined bribery within single nations. Here, we report online experiments and provide insights into crossnational bribery.

Conditioning on What? Heterogeneous Contributions and Conditional Cooperation.

We experimentally investigate how different information about others' individual contributions affects people's willingness to cooperate in a one-shot linear public goods game. We find that when information about individual contributions is provided, contributions are generally higher than when only average information is available. This effect is particularly strong when others' individual contributions are relatively homogeneous.

The competitive advantage of sanctioning institutions.

Understanding the fundamental patterns and determinants of human cooperation and the maintenance of social order in human societies is a challenge across disciplines. The existing empirical evidence for the higher levels of cooperation when altruistic punishment is present versus when it is absent systematically ignores the institutional competition inherent in human societies. Whether punishment would be deliberately adopted and would similarly enhance cooperation when directly competing with nonpunishment institutions is highly controversial in light of recent findings on the detrimental effects of punishment.