Money and crime: the relationship that wasn’t
There must be 10,000s of studies and news articles reporting findings that wealth or income is negatively related to crime. In other words, poverty causes crime. The popular theory being…
How much time should children be forced to spend in school?
Timothy Bates tweets a 2010 meta-analysis showing that students who attend more classes also attain higher grades: These results suggest that attending more classes causes students to learn more and…
In Sweden, talking about race and intelligence will get you a fine
I have somehow not heard of this case, but there's an ongoing case in Sweden where a 80-ish year old man, Bertil Malmberg, talked about the intelligence of nations, specifically…
Sweden finally publishes new immigrant crime rate data, which shows no surprises
Back in 2017, I wrote about how Sweden has a policy of hiding their immigrant crime rate statistics. (See also this tweet.) One cannot even buy them from the statistics…
No Swedish refugee miracle: large negative net contributions of immigrants
Recently, I found a Swedish language report that discusses economic consequences of refugee immigration to Sweden. Ruist, Joakim. 2018:3 Tid för integration – en ESO-rapport om flyktingars bakgrund och arbetsmarknadsetablering.…
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,…
Swedish immigrant crime data from the 1980s
I was skimming a Wikipedia article related to immigrant crime and came across an obscure Swedish language report from the 1990s: Ahlberg, J. (1996). Invandrares och invandrares barns brottslighet: En…
Organ donation consent vs. actual rates
There is a famous paper arguing the case for libertarian paternalism by using organ donation consent rates. Johnson, E. J., & Goldstein, D. (2003). Do defaults save lives?. Science, 302(5649),…
Transracial adoption study: Odenstad et al (2008)
I found this one a long time ago and tweeted it, but apparently forgot to blog it. Odenstad, A., Hjern, A., Lindblad, F., Rasmussen, F., Vinnerljung, B., & Dalen, M.…