cities to conduct a field experiment with roughly 350 donation appeals. We induce spatial differentiation by varying the …

matching method, some simple theoretical considerations, and evidence from a large-scale natural field experiment on charitable …

large-scale natural field experiment and a laboratory experiment. Similar to findings in the literature, conventional … 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 …

-scale natural field experiment and a laboratory experiment. Similar to findings in the literature, conventional 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 yields further …

experiment, we explore how thresholds should be chosen depending on past donations. The optimal choice of thresholds is rather …

the first year of our field experiment, we vary whether or not potential donors are informed that the ask will be repeated … experiment we show that previous non-donors behave as if expecting future calls, regardless of whether they have been explicitly …