Monday, September 22, 2008

Cognitive Science Spoils Everything

This is your brain on politics. Robert Burton:
Last week, I jokingly asked a health club acquaintance whether he would change his mind about his choice for president if presented with sufficient facts that contradicted his present beliefs. He responded with utter confidence. "Absolutely not," he said. "No new facts will change my mind because I know that these facts are correct."

. . . . .
Feelings of absolute certainty and utter conviction are not rational deliberate conclusions; they are involuntary mental sensations generated by the brain. Like other powerful mental states such as love, anger and fear, they are extraordinarily difficult to dislodge through rational arguments. Just as it's nearly impossible to reason with someone who's enraged and combative, refuting or diminishing one's sense of certainty is extraordinarily difficult. Certainty is neither created by nor dispelled by reason.

. . . .
Worse, our ability to assess political candidates is particularly questionable when we have any strong feeling about them. An oft-quoted fMRI study by Emory psychologist Drew Westen illustrates how little conscious reason is involved in political decision-making.

Westen asked staunch party members from both sides to evaluate negative (defamatory) information about their 2004 presidential choice. Areas of the brain (prefrontal cortex) normally engaged during reasoning failed to show increased activation. Instead, the limbic system -- the center for emotional processing -- lit up dramatically. According to Westen, both Republicans and Democrats "reached totally biased conclusions by ignoring information that could not rationally be discounted" (cognitive dissonance).

In other words, we are as bad at judging ourselves as we are at judging others. Most cognitive scientists now believe that the majority of our thoughts originate in the areas of the brain inaccessible to conscious introspection. These beginnings of thoughts arrive in consciousness already colored with inherent bias. No two people see the world alike. Each of our perceptions is filtered through our genetic predispositions, inherent biologic differences and idiosyncratic life experiences. Your red is not my red. These differences extend to the very building blocks of thoughts; each of us will look at any given question from his own predispositions. Thinking may be as idiosyncratic as fingerprints.

As a result, we are all plagued by bias, self-deceit and poor character judgment.
Or, as I've become fond of saying, "You can't reason someone out of something they didn't reason themselves into."

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