It's amazing to see scientific corroboration of what I've long felt--I've always thought that the main differences between liberal and conservative is that one concentrates too hard on the "thou shalts" of morality while the other concentrates too hard on the "thou shalt nots".

Yet it appears to be a bit more complex than that. If Democrats can understand that, they will have a far easier job of attracting the middle.

I've always considered myself to be just a tiny bit to the left of middle, and now I understand why polarization upsets me so much.