I’ll preface this by saying I’m in favor of drug legalization. I think this Reason magazine review paper is really bad, though. The review was done by Morris (2018) and it covers a lot of topics. I’m just going to focus on the section on violent crime, but the other sections are plenty flawed as well.Read More »
There are three main hypotheses for the relationship between IQ and educational achievement:
- Mental ability predicts greater educational achievement
- Educational achievement predicts greater IQ
- The relationship is a product of test construction
Michael Levin (1997) argues that black people are largely over-represented among American physicians, so much so that it is probably lowering the quality of care. This case is also presented by Kirkegaard (2019) and Levin largely takes the argument from Gottfredson (1986). Since I’ve been re-reading sections of Levin’s book, I’ll just quote his take, however.
Recently, I posted a couple studies on Twitter which suggested long-term ayahuasca use increased intelligence.Read More »
Good post on the social correlates of authoritarianism.
Using Altemeyer’s Right-Wing Authoritarianism Scale (abbreviated as RWA scale for now on) and a Big-Five personality test, Rosolack (1991) found that authoritarianism correlated negatively with intellect/ openness, conscientiousness and extraversion at -0.30, .23, and .14, respectively. Meaning that those who score higher on the RWA are less likely to seek, detect, comprehend and utilize patterns; more likely to do one’s work well and thoroughly; and are more likely to be full of energy. Other studies have found an insignificant correlation between RWA and extraversion (Costa & McCrae 1992 ; Truskosky and Vaux 1997 [in Butler 2000]). From this, we can see that individuals who are less open to new experiences are more likely to be authoritarians. Butler (2000) found that authoritarianism was correlated with ethnocentrism (.39) and anti-gay attitudes (.60). Interestingly enough, it was also found that authoritarians disliked fat people but didn’t fear becoming fat themselves.
Ray (1976) looked…
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An interesting predictor of local crime rates is the percent of the region examined that is black. Some may point to this and say that this is a result of discrimination. This is unlikely, as Rubenstein (2016) finds “Victim and witness surveys show that police arrest violent criminals in close proportion to the rates at which criminals of different races commit violent crimes.” Other reasons could include socioeconomic standards in the neighborhood, race differences in IQ, and underlying genetic differences in crime-committing-variables (aggression, ASB, etc.). Whatever the cause, the evidence for the association is documented in this blog post.Read More »