Can IPCC predict the future? Testing the 1990 predictions
A lot of people in my circles are skeptical about IPCC, probably as a general function of other insanity that these super-govt organizations tend to push. So I frequently hear…
What replicates? Non-replicating studies from Camerer et al (2018) with commentary
Camerer et al, Evaluating the replicability of social science experiments in Nature and Science between 2010 and 2015, Nature Human Behavior, 2018 Being able to replicate scientific findings is crucial…
Political quiz results
Since people keep asking about my results on such tests, and because my position has been misrepresented (e.g. by Les Temps). There's a lot of political tests online one can…
Data from NYT’s “An Extremely Detailed Map of the 2016 Election”
NYT has a cool new dataviz called An Extremely Detailed Map of the 2016 Election. Really, it's just a more detailed version of their initial county election page which I…
Replication crisis/decline effect in 1979
I was doing some work on my first name study preparing it for publication and was reading some old papers. McDavid, J. W., & Harari, H. (1966). Stereotyping of names…
Gladwell, the threshold effect for IQ, and Jensen
I don't think Malcolm Gladwell has been debunked hard enough, so here's my contribution towards that goal. For Steven Pinker's take, see here. Gladwell is essentially a story teller, and…
Danish national IQ
Best estimate of Danish-Scandinavian IQ based on recent, large samples is ~103 relative to UK norms. What is the Danish national IQ? If we look at Lynn and Vanhanen 2012,…
Country level indicators of altruism
A traditional approach to studying altruism has been to do some kind of economic game. E.g. seeing how nice people are in ultimatum games. One such study: Oosterbeek, H., Sloof,…
The original texts of the Eyferth study
Often discussed, occasionally cited, but rarely read -- certainly a highly suspicious combo -- I post here the original German language final version (we think): Eyferth, K. (1961). Leistungen verschiedener…
Turkheimer strikes back! (but misses)
Recently, I took a poke at Eric Turkheimer. And now he's ready with a retaliation: https://twitter.com/ent3c/status/1009245615367315456 Eric is trying a guilt by association attack by tying me to Roger Pearson…
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