Yes, small ones -- but not peer-reviewed or published (which is much harder). We did a tiny randomized admissions experiment early on (with the admissions in summer 2012, the follow-up surveys one year later), and a small randomized online experiment; we will probably run another randomized admissions set sometime in 2015, w/ results coming in in 2016. (In some years, if/when we get to a point where funding is more secure, we will likely do more.)
Is there a chance that a written up version of these small results will get posted on the CFAR website?
We're 4 days from the end of our matching fundraiser, and still only about 1/3rd of the way to our target (and to the point where pledged funds would cease being matched).
If you'd like to support the growth of rationality in the world, do please consider donating, or asking me about any questions/etc. you may have. I'd love to talk. I suspect funds donated to CFAR between now and Jan 31 are quite high-impact.
As a random bonus, I promise that if we meet the $120k matching challenge, I'll post at least two posts with some never-before-shared (on here) rationality techniques that we've been playing with around CFAR.