Written by Noah Carl.
A study on the relationship between intelligence and political views recently had people bickering on Twitter/X. The study, by Tobias Edwards and colleagues, found that intelligence was positively associated with six different measures of left-liberal attitudes in a sample of American adults. Not only that, but polygenic scores for intelligence were positively associated with all six measures too. This provides evidence that, on average, individuals with left-liberal attitudes are genetically more intelligent than their counterparts on the right.
The study itself looks to be careful and rigorous; I have no complaints about the methodology. What I will do is outline a couple of caveats.