http://seattletimes.nwsource.com/html/n ... ain10.html
"We're more likely to find extreme conservatives in the U.S. than extreme liberals."Brains of liberals, conservatives may work differently, study finds
By Chicago Tribune and Los Angeles Times
CHICAGO -- The differences between liberals and conservatives may run deeper than how they feel about welfare reform or the progress of the Iraq war: Researchers reported Sunday that their brains may actually work differently.
In a study likely to raise the hackles of some conservatives, scientists at New York University and the University of California, Los Angeles, found that a specific region of the brain's cortex is more sensitive in people who consider themselves liberals than in self-declared conservatives.
The brain region in question helps people shift gears when their usual response would be inappropriate, supporting the notion that liberals are more flexible in their thinking.
Say you drive home from work the same way every day, but one day there's a detour and you need to override your autopilot," said NYU psychologist David Amodio. "Most people function just fine. But there's a little variability in how sensitive people are to the cue that they need to change their current course."
-Analyzing the data, Sulloway said liberals were 4.9 times more likely than conservatives to show activity in the brain circuits that deal with conflicts and were 2.2 times more likely to score in the top half of the distribution for accuracy.
Based on the results, Sulloway said, liberals could be expected to more readily accept new social, scientific or religious ideas.