-scale natural field experiment and a laboratory experiment. Similar to findings in the literature, conventional matching for the … novel matching scheme. The lab experiment provides more fine-tuned evidence for the change in crowding and yields further …Is there a way of matching donations that avoids crowding out? We introduce a novel matching method where the matched …

matching for the same project results in partial crowding out in the field experiment and, as predicted, crowding out is … reduced under the novel matching scheme. The lab experiment provides more fine-tuned evidence for the change in crowding and …Is there a way of matching donations that avoids crowding out? We introduce a novel matching method where the matched …

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 … revenue gains are available on both margins. Our experiment, and others like it, illustrates the power of field experiments to …

matching for the same project results in partial crowding out in the field experiment and, as predicted, crowding out is … reduced under the novel matching scheme. The lab experiment provides more fine-tuned evidence for the change in crowding and …Is there a way of matching donations that avoids crowding out? We introduce a novel matching method where the matched …

This paper studies how imposing norms on contribution behavior affects individuals' intrinsic motivation. We consider … legally a tax. We design a randomized field experiment with treatments informing individuals that the levy is a tax. We …, communicating the legal norm results in a significant crowd-out of intrinsic motivation. In contrast, strongly intrinsically …

Matching schemes, where a party matches the contribution of others, reduce the effective price of a good and aim to …

Matching schemes, where a party matches the contribution of others, reduce the effective price of a good and aim to …

and prayers affect charity donations to victims of a major public risk – natural disasters. Our analytical framework … experiments with Red Cross donations to hurricane victims. Consistent with our model, our main experiment finds prayers reduce …

Ineffective fundraising lowers the resources charities can use for goods provision. We combine a field experiment and a … causal machine-learning approach to increase a charity's fundraising effectiveness. The approach optimally targets … fundraising to individuals whose expected donations exceed solicitation costs. Among past donors, optimal targeting substantially …