Peer-to-peer sanctions increase cooperation in multi-person social dilemmas (Fehr & Gachter (2000)), but not when subjects have the option to retaliate (Nikiforakis (2008)). One-shot peer-to-peer rewards have been found to enhance efficiency too (Vyrastekova & van Soest (2008), Rand et al....

Despite intensive research there is no clear evidence for a link between lottery risk preferences and risk involved in trusting others. We argue that this is partially due to a misalignment of the underlying sources of risk. Trusting is giving up control to a human source of risk while lottery...

A trustor faces a risky choice in the trust game when he acts upon his belief regarding the chances of betrayal by the trustee. Despite intensive research there is no clear evidence for a link between lottery risk preferences and risk involved in trusting others. We argue that this is due to...

We conduct a field experiment to measure cooperation among groups of recreational fishermen at a privately owned fishing facility. The parameters are chosen so that group earnings are greater when group members catch fewer fish, as in the Voluntary Contributions Mechanism (VCM). In a manner...

We report a framed field experiment, in which we study the effectiveness of punishment and reward in sustaining cooperation in a social dilemma. Punishments tend to be directed at non-cooperators and rewards are assigned by those who are relatively cooperative. In contrast to the results...

Green technological progress bears a strong potential to alleviate climate change, but its utilization is contingent on factors which are by nature impossible to anticipate or predict. Developing stochastic optimisation models, we explore how the decision to invest in research and development...