4 ms·

The following essay sums it up pretty well: http://slatestarcodex.com/2014/09/30/i-can-tolerate-anything-except-the-outgroup/ http://slatestarcodex.com/2014/09

• burfog 10y ago
  Facinating: "Some of it is certainly genetic – estimates of the genetic contribution to political association range from 0.4 to 0.6. Heritability of one’s attitudes toward gay rights range from 0.3 to 0.5, which hilariously is a little more heritable than homosexuality itself. (for an interesting attempt to break these down into more rigorous concepts like “traditionalism”, “authoritarianism”, and “in-group favoritism” and find the genetic loading for each see here. For an attempt to trace the specific genes involved, which mostly turn out to be NMDA receptors, see here)" links to studies on the matter too