"...the gap between subjects with these outlooks became larger, not smaller as scientific literacy and numeracy increased..."
"...what an ordinary member of the public believes -- or does, as consumer or voter -- has no practical impact on climate change, and hence no impact on the risk he or she faces. So any mistake that individual makes on the science is really immaterial to his or her personal well-being. What matters a lot more is having a belief that fits in with her group -- it can really ruin your life to hold a position that is at odds with your peers on a controversial issue. So it makes sense that people will pay more attention to "getting it right" relative to their group. It doesn't take a lot of sophisticated thought to be pretty good at that. But if you are capable of technical reasoning -- and you know a lot about science (we measured that too) -- you can do an even better job finding support for his or her group's position and rationalizing away evidence that challenges that position. If that is how things work, then people who are good at quantitative reasoning will be even more polarized."