[Does this study say that the reason why some people become more
conservative with age is because of brain rot? that hardly explains
quick changes, such as that of David Horowitz.

[what do such studies say about Marxist brains?]

http://www.latimes.com/news/printedition/asection/la-sci-politics10sep10,1,6488451.story?coll=la-news-a_section
>From the Los Angeles Times

Study finds left-wing brain, right-wing brain

Even in humdrum nonpolitical decisions, liberals and conservatives
literally think differently, researchers show.

By Denise Gellene
Los Angeles Times Staff Writer

September 10, 2007

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 today in 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.

The results show "there are two cognitive styles -- a liberal style
and a conservative style," said UCLA neurologist Dr. Marco Iacoboni,
who was not connected to the latest research.

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.

Frank J. Sulloway, a researcher at UC Berkeley's Institute of
Personality and Social Research who was not connected to the study,
said the results "provided an elegant demonstration that individual
differences on a conservative-liberal dimension are strongly related
to brain activity."

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.

"There is ample data from the history of science showing that social
and political liberals indeed do tend to support major revolutions in
science," said Sulloway, who has written about the history of science
and has studied behavioral differences between conservatives and
liberals.

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.

Political orientation, he noted, occurs along a spectrum, and
positions on specific issues, such as taxes, are influenced by many
factors, including education and wealth. Some liberals oppose higher
taxes and some conservatives favor abortion rights.

Still, he acknowledged that a meeting of the minds between
conservatives and liberals looked difficult given the study results.

"Does this mean liberals and conservatives are never going to agree?"
Amodio asked. "Maybe it suggests one reason why they tend not to get
along."

[EMAIL PROTECTED]

Copyright 2007 Los Angeles Times
--
Jim Devine / "Segui il tuo corso, e lascia dir le genti." (Go your own
way and let people talk.) --  Karl, paraphrasing Dante.

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