This paper presents evidence from a field experiment, which aims to identify the two sources of worker's pro …-social motivation that have been considered in the literature: action-oriented altruism and output-oriented altruism. To this end we …-oriented altruism. We then compare the latter to effort exerted in an environment where both types of altruistic preferences are …

We present evidence from a natural field experiment and structural model designed to shed light on the efficacy of … alternative fundraising schemes. In conjunction with the Bavarian State Opera, we mailed 25,000 opera attendees a letter … describing a charitable fundraising project organized by the opera house. Recipients were randomly assigned to six treatments …

This paper examines the impact of payment choice on charitablegiving with a door-to-door fund-raising field experiment …

In a large natural field experiment, we explore the effect of providing donors with the opportunity to choose the …

's contacts. However, results from a field experiment where broadcasting of the initial pledges was randomized suggest that the … observational findings were likely due to homophily rather than genuine social contagion effects. The experiment also shows that … (30 out of 6.4 million users reached) were made. Finally, an online survey experiment showed that both the presence of an …

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 …

We conduct a natural field experiment on direct and indirect transfer mechanisms for small donations. Charitable …

We conduct a natural field experiment on direct and indirect transfer mechanisms for small donations. Charitable …