"There are two cognitive styles -- a liberal style and a conservative style."

Some scientists did a study that, they say, reveals there's a "right wing brain" and a "left wing brain":

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....

Lead author David Amodio, an assistant professor of psychology at New York University, cautioned that the study looked at a narrow range of human behavior and that it would be a mistake to conclude that one political orientation was better. The tendency of conservatives to block distracting information could be a good thing depending on the situation, he said.

Do you find yourself blocking the distracting information that is this study? You may be a conservative.

IN THE COMMENTS: I love this response from Pogo:

"conservatives tend to be more structured and persistent in their judgments whereas liberals are more open to new experiences. "

Read: Liberals are good people. Conservatives are stupid, unable to tell one letter from another.

Or: Liberals have no standards, and can be made to believe anything at all, no matter how ridiciulous.

... Conservatives quickly discover how to avoid time-wasting. Recognizing the preponderance of Ms over Ws, vote M. Spending valuable thought on being precise aboout M vs W is a waste of your time. The more crucuial question is: when the incentive to be right is correct, who is more accurate? For example, why spend effort on trivial matter whose consequences of being wrong are zero?

I read the study. In contrast to their interpretation, it tells me that liberals easily do what they're told. Conservatives resist.

Another issue I see now is: Which students volunteer to do psychological tests? It may be that liberal students want to help further science and conservative students are showing up for the cash. The conservative finds the most efficient way to get what he wants, which is the cash. Why bother getting the answers right? Also, there is the matter of which students self-identify as "conservative" -- especially among the students who chose to attend New York University and UCLA, where the study was done. These may be very usual people. Meanwhile, most students call themselves "liberal" at these places -- I assume. You may not be comparing the brains of conservatives and liberals, but of oddball outsiders and average kids.

ADDED: A neuroscientist trashes the study:

... 91% of the variance in accuracy was attributable to factors other than political orientation. Moreover, they do not present a figure of this data as they did for their other results. When a correlation is this small (.30), it can be heavily influenced by the performance of a very small number of subjects who may be outliers.

A related point on the possibility of a small number of subjects influencing the data. They don't report the numbers of subjects who were liberal versus conservatives but perusal of one of their figures indicates that they had a grand total of 7 subjects who were on the conservative side of '0'. This is totally inadequate for any behavioral study. They also don't report the gender breakdown of the subjects by political orientation. There is strong bias to females in the study (63%) but, as you know, there is a very strong likelihood that the males were over-represented among the conservative participants (this is not reported). This may sound like a trivial factor but it is not. I can tell you from my own experiences in testing university students in dozens of studies on cognitive abilities that the typical university male could not give a crap about how they perform in psychology lab experiments. This is a critical factor if there is a tendency for the conservatives in their study to also be males.