Reply #13: The genetic components seem to involve personality traits [View All]

[TechBear_Seattle]

People who are inherently more agressive, more xenophobic, etc. are going to be more attracted to a set of doctrines and principles than someone who is more inclined to cooperation, more xenophilic, etc. And it is pretty established that such personality traits are genetic to a large extent (although, of course, modified by upbringing and experience.)

Studies like this have been going on for a while; I remember reading about them in college sociology classes. The data that is collected includes siblings raised in separate households. One of the results that keeps coming up is that children whose parents both tend towards either end of the socio-political spectrum will also tend towards the same end, even when raised almost from birth by parents of the opposite end.