field experiment that compares the principal-first and agent-first orderings to each other and a gift-less control …

There has been little systematic study of the mechanisms typically used to raise money for charity. One of the most … experiment randomly assigning participants to four raffle treatments to examine the effectiveness of alternative incentive … schemes designed to encourage either participation or volume. Our results confirm the importance of incentives in that we find …

We examine optimal incentives for charitable giving with a large-scale field experiment involving 26 charities and over … incentive schemes, taking into account the goals of the charity and donor preferences. Two of these optimal incentives were … policy to evaluate effectiveness. The best-guess incentives in our initial field experiment turned out to be ineffective at …

treatment group, subjects can either specify a charity of their choice, or select one from a list of five well-known charities …

donations. We also primed between-subjects the emphasis on the donation value to the charity (pure altruism) or the sacrifice to … the donor (impure warm-glow altruism). Consistent with the model's predictions, the experiment shows that priming pure … volunteering time to donating money when monetary donations are, ceteris paribus, more efficient for providing resources to charity …

We present evidence from a natural field experiment designed to shed light on the efficacy of fundraising schemes in … fundraising ; natural field experiment … opera attendees a letter describing a charitable fundraising project organized by the opera house. Recipients were randomly …

elections trying to attract voters. In a laboratory experiment using exchange games, in which the trustor can choose the trustee …, we study whether trustees can signal their trustworthiness by giving to charity. Our results show that donors are indeed … generosity, such as investments in corporate social responsibility or donations to charity during a political campaign, can …

'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 …

display no difference in rationality from population averages and there is evidence of altruism among participants. We provide …