Suspicions Confirmed, Republicrats Can't Think! Political bias affects brain activity, study finds (MSNBC) From Owen

MSNBC - Political bias affects brain activity, study findshttp://msnbc.msn.com/id/11009379/

"A TOTAL LACK OF REASON IN POLITICAL DECISION MAKING" Political bias affects brain activity; study finds
Democrats and Republicans both adept at ignoring facts, brain scans show

MSNBC.com

Live Science

Updated: 6:46 p.m. ET Jan. 24, 2006

Original Storylink

      Jim Bourg / Reuters file

      Subjects were asked to evaluate statements by President George W. Bush and Democratic presidential nominee Sen. John Kerry, seen here after a debate on Oct. 8, 2004. Both Republicans and Democrats ignored information that could not rationally be discounted, the study found.
      "When a candidate for public office faces the voters he does not face men of sense; he faces a mob of men whose chief distinguishing mark is the fact that they are quite incapable of weighing ideas, or even of comprehending any save the most elemental ~ men whose whole thinking is done in terms of emotion, and whose dominant emotion is dread of what they cannot understand. So confronted, the candidate must either bark with the pack or be lost. All the odds are on the man who is, intrinsically, the most devious and mediocre ~the man who can most adeptly disperse the notion that his mind is a virtual vacuum. The Presidency tends, year by year, to go to such men. As democracy is perfected, the office represents, more and more closely, the inner soul of the people. We move toward a lofty ideal. On some great and glorious day the plain folks of the land will reach their heart's desire at last, and the White House will be adorned by a downright moron."

      ~H. L. Mencken, in the Baltimore Sun, July 26, 1920 [ow]

Democrats and Republicans alike are adept at making decisions without letting the facts get in the way, a new study shows.

And they get quite a rush from ignoring information that's contrary to their point of view.

Researchers asked staunch party members from both sides to evaluate information that threatened their preferred candidate prior to the 2004 Presidential election. The subjects' brains were monitored while they pondered.

The results were announced today.

"We did not see any increased activation of the parts of the brain normally engaged during reasoning," said Drew Westen, director of clinical psychology at Emory University. "What we saw instead was a network of emotion circuits lighting up, including circuits hypothesized to be involved in regulating emotion, and circuits known to be involved in resolving conflicts."

Bias on both sides

The test subjects on both sides of the political aisle reached totally biased conclusions by ignoring information that could not rationally be discounted, Westen and his colleagues say.

Then, with their minds made up, brain activity ceased in the areas that deal with negative emotions such as disgust. But activity spiked in the circuits involved in reward, a response similar to what addicts experience when they get a fix, Westen explained.

The study points to a total lack of reason in political decision-making.

"None of the circuits involved in conscious reasoning were particularly engaged," Westen said. "Essentially, it appears as if partisans twirl the cognitive kaleidoscope until they get the conclusions they want, and then they get massively reinforced for it, with the elimination of negative emotional states and activation of positive ones."

Notably absent were any increases in activation of the dorsolateral prefrontal cortex, the part of the brain most associated with reasoning.

The tests involved pairs of statements by the candidates, President George W. Bush and Senator John Kerry, that clearly contradicted each other. The test subjects were asked to consider and rate the discrepancy. Then they were presented with another statement that might explain away the contradiction. The scenario was repeated several times for each candidate.

A brain-scan technique known as functional magnetic resonance imaging, or fMRI, revealed a consistent pattern. Both Republicans and Democrats consistently denied obvious contradictions for their own candidate but detected contradictions in the opposing candidate.

"The result is that partisan beliefs are calcified, and the person can learn very little from new data," Westen said.

Other relatively neutral candidates were introduced into the mix, such as the actor Tom Hanks. Importantly, both the Democrats and Republicans reacted to the contradictions of these characters in the same manner.

The findings could prove useful beyond the campaign trail.

"Everyone from executives and judges to scientists and politicians may reason to emotionally biased judgments when they have a vested interest in how to interpret 'the facts,'" Westen said.

The researchers will present the findings Saturday at the Annual Conference of the Society for Personality and Social Psychology.

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