“...Strong reciprocity explains prosocial cooperation by the presence of individuals who incur costs to help those who helped them ('strong positive reciprocity')...”

“...Acting on a gut feeling may sometimes lead to poor decisions, but it will usually support the common good, according to a study showing that human intuition...”

“...One lingering puzzle is why voluntary contributions to public goods decline over time in experimental and real-world settings. We show that the decline of...”

“...People are generally assumed to shy away from activities generating stochastic rewards, thus requiring extra compensation for handling any additional risk. In...”

“...This paper provides evidence that free riders are heavily punished even if punishment is costly and does not provide any material benefits for the punisher...”

“...Does the cultural background influence the success with which genetically unrelated individuals cooperate in social dilemma situations? In this paper, we...”

“...We document the widespread existence of antisocial punishment, that is, the sanctioning of people who behave prosocially. Our evidence comes from public goods...”

“...We investigate the link between leadership, beliefs and pro-social behavior in social dilemmas. This link is interesting because field evidence suggests that...”

“...Online labor markets provide new opportunities for behavioral research, but conducting economic experiments online raises important methodological challenges...”