Via Kevin Drum, a story about how conservatives and liberals think differently:

Exploring the neurobiology of politics, scientists have found that liberals tolerate ambiguity and conflict better than conservatives because of how their brains work.

In a simple experiment reported todayin the journal Nature Neuroscience, scientists at New York University and UCLA show that political orientation is related to differences in how the brain processes information.

Previous psychological studies have found that conservatives tend to be more structured and persistent in their judgments whereas liberals are more open to new experiences. The latest study found those traits are not confined to political situations but also influence everyday decisions.

So far, no surprise… these are the definitions of “liberal” and “conservative” after all.

Participants were college students whose politics ranged from “very liberal” to “very conservative.” They were instructed to tap a keyboard when an M appeared on a computer monitor and to refrain from tapping when they saw a W.

M appeared four times more frequently than W, conditioning participants to press a key in knee-jerk fashion whenever they saw a letter.

Each participant was wired to an electroencephalograph that recorded activity in the anterior cingulate cortex, the part of the brain that detects conflicts between a habitual tendency (pressing a key) and a more appropriate response (not pressing the key). Liberals had more brain activity and made fewer mistakes than conservatives when they saw a W, researchers said. Liberals and conservatives were equally accurate in recognizing M.

Researchers got the same results when they repeated the experiment in reverse, asking another set of participants to tap when a W appeared.

Analyzing the data, Sulloway said liberals were 4.9 times as likely as conservatives to show activity in the brain circuits that deal with conflicts, and 2.2 times as likely to score in the top half of the distribution for accuracy.

Sulloway said the results could explain why President Bush demonstrated a single-minded commitment to the Iraq war and why some people perceived Sen. John F. Kerry, the liberal Massachusetts Democrat who opposed Bush in the 2004 presidential race, as a “flip-flopper” for changing his mind about the conflict.

Based on the results, he said, liberals could be expected to more readily accept new social, scientific or religious ideas.

And we see something similar with the inability of many conservatives to accept data. Consider how the Gipper is perceived. Reagan had views of himself that he managed to get the rest of the American public to believe. Therefore, it would be flip-flopping, for instance, to admit that the growth rate in real GDP per capita was faster under JFK/LBJ and Clinton than under Reagan, or that Reagan actually increased the size of the government and was probably as fiscally irresponsible a President as we had. To the rest of us, the data shows what the data shows, and there’s no point arguing with the data.


Administrative note… I’ll be traveling for a few days and will be probably out of pocket. But the rest of the Angry Bear gang should still be here.