Wired News: Dems, GOP: Who's Got the Brains?: "Last month, Drs. Joshua Freedman and Marco Iacoboni of the University of California at Los Angeles finished scanning the brains of 10 Republicans and 10 Democrats. Each viewed images of President Bush, John Kerry and Ralph Nader.
When viewing their favorite candidate, all showed increased activity in the region implicated in empathy. And when viewing the opposition, all had increased blood flow in the region where humans consciously assert control over emotions � suggesting the volunteers were actively attempting to dislike the opposition.
Nonetheless, some differences appeared between the brain activity of Democrats and Republicans. Take empathy: One Democrat's brain lit up at an image of Kerry 'with a profound sense of connection, like a beautiful sunset,' Freedman said. Brain activity in a Republican shown an image of Bush was 'more interpersonal, such as if you smiled at someone and they smiled back.'"