New studies of the brain indicate that Republicans and Democrats use different parts of it to make political decisions. Guess which one uses their "threat response system!"

Courtesy of Mother Jones:  

The past two weeks have seen not one but two studies published in scientific journals on the biological underpinnings of political ideology. And these studies go straight at the role of genes and the brain in shaping our views, and even our votes. 

First, in the American Journal of Political Science, a team of researchers including Peter Hatemi of Penn State University and Rose McDermott of Brown University studied the relationship between our deep-seated tendencies to experience fear—tendencies that vary from person to person, partly for reasons that seem rooted in our genes—and our political beliefs. What they found is that people who have more fearful disposition also tend to be more politically conservative, and less tolerant of immigrants and people of races different from their own. As McDermott carefully emphasizes, that does not mean that every conservative has a high fear disposition. "It's not that conservative people are more fearful, it's that fearful people are more conservative," as she puts it. 

I interviewed the paper's lead author, Peter Hatemi, about his research for my 2012 book The Republican Brain. Hatemi is both a political scientist and also a microbiologist, and as he stressed to me, "nothing is all genes, or all environment." These forces combine to make us who we are, in incredibly intricate ways. 

And if Hatemi's and McDermott's research blows your mind, get this: Darren Schreiber, a political neuroscientist at the University of Exeter in the United Kingdom, first performed brain scans on 82 people participating in a risky gambling task, one in which holding out for more money increases your possible rewards, but also your possible losses. Later, cross-referencing the findings with the participants' publicly available political party registration information, Schreiber noticed something astonishing: Republicans, when they took the same gambling risk, were activating a different part of the brain than Democrats. 

Republicans were using the right amygdala, the center of the brain's threat response system. Democrats, in contrast, were using the insula, involved in internal monitoring of one's feelings. Amazingly, Schreiber and his colleagues write that this test predicted 82.9 percent of the study subjects' political party choices—considerably better, they note, than a simple model that predicts your political party affiliation based on the affiliation of your parents.

Okay I have read various versions of these studies the past several days and they are both fascinating and frustrating to me.

According to the data there does not seem to be a whole lot that one can do to change a person's political point of view. Which in some ways explains why introducing new facts to people with a conservative perspective seems to be a waste of perfectly good data. They simply refuse to accept its existence or challenge the methods by which is was gathered.

It also seems to explain why conservatives are so incredibly concerned about gun ownership and national security. They apparently base their world view on the fear center of their brains, which is constantly on alert for danger, while where as the more liberal among us are using the insula, whihc has been described by neurosurgeons as the following:

According to neuroscientists who study it, the insula is a long-neglected brain region that has emerged as crucial to understanding what it feels like to be human. 

They say it is the wellspring of social emotions, things like lust and disgust, pride and humiliation, guilt and atonement. It helps give rise to moral intuition, empathy and the capacity to respond emotionally to music.

Well that certainly explains quite a lot doesn't it?

Essentially, according to the new research, Republicans make their political decisions based on fear, and Democrats tend to make them based on empathy and moral intuition.

Sounds reasonable to me.