How Scientists See the Differences in Liberal and Conservative Brains

We're partisans by nature, and once we pick a side we see the world in red or blue. But how do political psychologists actually measure that? National Journal's Brian Resnick volunteers his brain in a New York University lab to find out.

For more on the the battle for our political brains, read National Journal's "How Politics Breaks Our Brains, and How We Can Put Them Back Together."