Obvious, but Interesting Study

A study by Emory University confirms what we might have suspected for some time: there is precious little reason in partisan politics.

Shortly before the last Presidential election, researchers plunked committed Democrats and Republicans in fMRI machines to record brain activity as it happens. They then fed them statements from George W. Bush, John Kerry, and neutral male figures like Tom Hanks, and asked the study participants to mentally resolve obvious discrepancies in several statements made by each man.

What they found:

"We did not see any increased activation of the parts of the brain normally engaged during reasoning," says Drew Westen, director of clinical psychology at Emory who led the study. "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." Westen and his colleagues will present their findings at the Annual Conference of the Society for Personality and Social Psychology Jan. 28.

Once partisans had come to completely biased conclusions -- essentially finding ways to ignore information that could not be rationally discounted -- not only did circuits that mediate negative emotions like sadness and disgust turn off, but subjects got a blast of activation in circuits involved in reward -- similar to what addicts receive when they get their fix, Westen explains.

...

Behavioral data showed a pattern of emotionally biased reasoning: partisans denied obvious contradictions for their own candidate that they had no difficulty detecting in the opposing candidate. Importantly, in both their behavioral and neural responses, Republicans and Democrats did not differ in the way they responded to contradictions for the neutral control targets, such as Hanks, but Democrats responded to Kerry as Republicans responded to Bush.

While reasoning about apparent contradictions for their own candidate, partisans showed activations throughout the orbital frontal cortex, indicating emotional processing and presumably emotion regulation strategies. There also were activations in areas of the brain associated with the experience of unpleasant emotions, the processing of emotion and conflict, and judgments of forgiveness and moral accountability.

Another finding in the study shows this occurs outside conscious awareness. For some reason, I do not find that comforting.