observations. Specifically, these axioms imply that interdependence of preferences ("altruism") results from concerns for the …-givers, altruistic givers, or social pressure givers and use welfare-based altruism to reliably predict giving, sorting, and taking …

In a n experiment, we test the impact of quality certificates on donation s to a charity. Compared to the control group … charity . The choice of donation values over time shows strong persistence such that the difference between the two groups …

In an experiment, we test the impact of quality certificates on donations to a charity. When presented with a quality …

We study a form of threshold matching in fundraising where donations above a certain threshold are topped up with a … experiment, we explore how thresholds should be chosen depending on past donations. The optimal choice of thresholds is rather … threshold that applies to all recipients of a fundraising call. …

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 …

charitable causes. In a large-scale natural field experiment with over 180,000 cli-ents of a micro-lending company in Kyrgyzstan …

We study intertemporal crowding between two fundraising campaigns for the same charitable organization by manipulating …

threshold matching can induce crowd-ing in if appropriately personalized. In a field experiment, we explore how thresholds … of a fundraising call. …

We study intertemporal crowding between two fundraising campaigns for the same charitable organization by manipulating … with intuition, the data from our experiment in the first year suggests that multiple donations are substitutes and … manipulations no longer have an effect. When receiving a second fundraising call, donors learn that also future repetitions may …

show theoretically that threshold matching can induce crowding in if appropriately personalized. In a field experiment, we … applying to all recipients of a fundraising call. …