communication, we also find systematic deviations from optimal behavior in how the communicated information is used. Specifically …

post announcement mechanism does not have a significant effect on the cooperation rate. However, the nudge leads to a … striking increase in the cooperation rate. We provide suggestive evidence that the nudge we use provides subjects with a focal …

Social interactions predominantly take place under the shadow of the future. Previous literature explains cooperation … paper provides a causal test of the importance of social preferences for cooperation, varying the composition of …-registered experiments (N = 1,074), we show that groups of prosocial individuals achieve substantially higher levels of cooperation. The …

the need for a new theory of how cooperation emerges. … daher die Notwendigkeit einer neuen Theorie über die Entstehung von Kooperation nahe. …

International climate negotiations have so far failed to produce ambitious climate cooperation. We combine laboratory … negotiate more frequently. We find that more frequent interactions allow subjects to build trust and cooperation more safely …. Thus, more frequent revisions of commitments promote cooperation, but the ratchet-up design fails to achieve the same …