Currently, I am organizing a speaker series to raise money for Peter Singer’s charity The Life You Can Save. To make an experiment out of it, I structured the event as a blind auction. People donate to the charity and email me the receipt. On the day of the event, I release invitations to the top-thousand most generous donors.
So far, I’m really pleased with the response! I feel like this approach is inducing people to donate, which is exciting. On the other hand, it has led me to ask myself (1) to what extent do unique fundraisers induce more aggregate donating, as opposed to simply shifting funds from alternative charities; and (2) to the extent the donations I’m receiving receipts for are simply people shifting a donation they would have already made to another charity, is there a way to approximate which charities are being negatively affected? These seem like important questions for assessing the effectiveness of fundraising.
I’m sure I’m not the first person to ask these questions. I found a few relevant studies, including:
- This randomized controlled trial done by Facebook that found that Save the Children ads increased Save the Children donations, but reduced donations to other charities.
- This study that found zip codes near tornado events donated just as much to charity as other zip codes, suggesting minimal crowdout.
- Several experimental lab studies that seem to suggest crowdout (here and here).
I take from this that crowdout is a very real concern. But from my quick reading, I had trouble deriving good rules-of-thumb for quantifying crowd-out. So I thought I’d ask here for anyone had any suggestions.
Thank you!
Answering quickly and informally for Ge Effektivt (sorry, I hadn't seen this earlier).
When I used something like 1h to try to estimate the counterfactuality of our donations I ended up around 50%. This is removing users who say they found us through Effective Altruism Sweden, Giving What We Can pledgers (although some signed up because of us), people who found us through webpages of charities we donate to, people I know are in the EA Sweden network (some of who I think give more than they otherwise would), and then adding some on top of that. I'm open to suggestions on how to get even closer to the right answer, without spending too much time.
We're raising a total of ~$700k on a ~$105k budget this year, so in the end, I think our counterfactual multiplier might be around 2-3x.
With that said, I expect the next 12 months to include a more in-depth analysis of counterfactual funds raised for us and similar sites. I am looking forward to sharing the results with you!