the two parties today? do you see one that's more, you know, that's more analytical or one that's more emotional or whatever? does it apply to parties and not just people? >> on chemistry.com, i studied 175,000 people and i asked them a whole lot of things about themselves, but also, of course, what their politics were. there are a lot of studies, actually, of the basic traits of the conservative and the liberal, and what i found is that conservatives really express much more of a third system, the serotonin system. linked with serotonin in the brain is being very conventional, being more cautious, being methodical, orderly. i mean, look at romney's hair, he is orderly. they follow the rules. they respect authority. and you see all of those more in the republican sort of zeitgeist. i mean, their basic concept. the people who tend to be democrats score higher in the