Since pedophiles tend to be shorter and less intelligent I’m willing to accept deep biological connections across many traits.But I feel that the whole area is somewhat of a muddle right now.When age is controlled, the correlations in different studies range mostly between 0.10 and 0.30, and the average about 0.20.
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I think that’s doable with this data set, but I didn’t see it in the paper (tell me if I’ve missed something).
At some point we’ll have accurate high coverage whole genomes for many pairs, and we can ascertain whether it’s mutational load and pleiotropy more directly when it comes to correlations like this.
End Update One moderately interesting social science finding is that there is a positive correlation between height and measured intelligence (e.g., on an I. When I say it is highly heritable, I mean to imply that most of the variation in height in developed societies is due to genes (80-90%).
As it happens intelligence is somewhat similar in its genetic architecture, heritable due to small effects across many genes.
In this study, we modeled the covariation between monozygotic and dizygotic twins, their siblings, and their parents (total N = 7,905) to elucidate the nature of the correlation between two potentially sexually selected traits in humans: height and IQ.
Unlike previous designs used to investigate the nature of the height–IQ correlation, the present design accounts for the effects of assortative mating and provides much less biased estimates of additive genetic, non-additive genetic, and shared environmental influences.
A new paper in Traits that are attractive to the opposite sex are often positively correlated when scaled such that scores increase with attractiveness, and this correlation typically has a genetic component.
Such traits can be genetically correlated due to genes that affect both traits (“pleiotropy”) and/or because assortative mating causes statistical correlations to develop between selected alleles across the traits (“gametic phase disequilibrium”).
These are small correlations obviously, but it’s what we’d expect.