copied from elsewhere...
Ever wonder why we are so divided? How a single issue can be seen from two completely different viewpoints? The answer lies in how our brains process risk.
Liberals consistently use a part of the insula to process risk, this a region of the brain associated with perception of one’s own feelings. Liberal brains experience risk as a problem to be solved.
Conservatives consistently use the amygdala to process risk. This region is associated with gut feelings and fight or flight responses. Risk is assessed as a threat with a potential reward.
In today’s world, liberals have convinced the masses that every problem can be solved with reasoning. For example, liberals see terrorism as something we can solve with reason and inclusion, conservatives see terrorism as something we should reject and resist.
Both views have value in solving problems, however when our ancestors were faced with a problem such as, “should we run from that tiger,” the fight or flight response would win over the urge to “negotiate with it.” Natural selection would have kept the liberal brain from procreation.
So, when you argue with liberals, realize they can't control their faulty judgment, they are hard-wired to have their particular "opinion."