The GiveWell Blog

Errors in DCP2 cost-effectiveness estimate for deworming

Two notes on this post: This post discusses flaws in a particular published cost-effectiveness estimate for deworming. It should not be taken as a general argument against deworming as a promising intervention, and it does not address various other publications on deworming including the 2003 paper by Edward Miguel and Michael Kremer. Prior to publication,… Read More

Why we can’t take expected value estimates literally (even when they’re unbiased)

While some people feel that GiveWell puts too much emphasis on the measurable and quantifiable, there are others who go further than we do in quantification, and justify their giving (or other) decisions based on fully explicit expected-value formulas. The latter group tends to critique us – or at least disagree with us – based… Read More

Cost-effectiveness estimates: Inside the sausage factory

We’ve long had mixed feelings about cost-effectiveness estimates of charitable programs, i.e., attempts to figure out “how much good is accomplished per dollar donated.” The advantages of these estimates are obvious. If you can calculate that program A can help much more people – with the same funds, and in the same terms – than… Read More