In a n experiment, we test the impact of quality certificates on donation s to a charity. Compared to the control group …, participants presented with a quality certificate chose higher donations by around 10% and reported higher trust towards the same … 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 … certificate, participants chose higher donations by approximately 10%. This effect is significant for donations out of prize money … and actual own money donations, and not significant but positive for own money intended donations. Moreover, this effect …

and why thank-you gifts vary in effectiveness. We first demonstrate that although gifts often raise donations to … making gifts optional, as commonly seen in fundraising campaigns, did not change results. Altogether, these experiments … the charity, such as recent donors. Changing to an optional gift yields similar results, likely because the gift offer …

donations. We also primed between-subjects the emphasis on the donation value to the charity (pure altruism) or the sacrifice to … volunteering time to donating money when monetary donations are, ceteris paribus, more efficient for providing resources to charity … vary between monetary donations and volunteering, thus allowing preferences for impure altruism to rationalize inefficient …