We conduct an artefactual field experiment to study whether the individual preferences and propensity to cooperate of …

between the tasks and the role of the subject pool, students and non-students. Our findings suggest that cooperation in public …

We run a public good experiment in the field and in the lab with (partly) the same subjects. The field experiment is a … true natural field experiment as subjects do not know that they are exposed to an experimental variation. We can show that … subjects' behavior in the classic lab public good experiment correlates with their behavior in the structurally comparable …

To investigate the external validity of laboratory results, we combine a public good experiment with three treatments … in a field experiment. One treatment offers the opportunity to free-ride, the other two are placebo treatments. We …

Communication is well known to increase cooperation rates in social dilemma situations, but the exact mechanisms behind … artefactual field experiment conducted with 216 villagers from small, rural communities in northern Namibia. In line with previous … experimental findings, we observe a strong increase in cooperation when face-to-face communication is allowed before decision …

' purchase decisions (whether to buy, and if so how much to pay) in a natural experiment at an online music store with PWYW …%. The experiment suggests that even low levels of social pressure without face to face interaction on customers leads to a …