education is a dangerous thing: it fosters independent thought...

[acroyear]

From a different study mostly looking at the predictive abilities of the political spectrum:  The Frontal Cortex : The Political Brain:

But Tetlock did find one mild correlation when he analyzed all the data. He found that foxes - his nickname for the cognitive style that was most open-minded and receptive to new facts - were more likely to be political centrists. Moderation is good for thought.