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 …

' 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 …

artifactual online experiment, subjects located in a European Union member state took a dichotomous choice between a cash prize …

experiment randomly assigning participants to four raffle treatments to examine the effectiveness of alternative incentive … revenue gains are available on both margins. Our experiment, and others like it, illustrates the power of field experiments to …

In a door-to-door fundraising field experiment, we study the impact of fundraising mechanisms on charitable giving. We …, it raised the lowest revenue per household in the field. Our experiment reveals two potential explanations for this …