What unites Trump voters?

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In the mid-2000s, a political scientist approached the neuroscientist Read Montague with a radical proposal. He and his colleagues had evidence, he said, that political orientation might be partly inherited, and might be revealed by our physiological reactivity to threats. To test their theory, they wanted Montague, who heads the Human Neuroimaging Laboratory at Virginia Tech, to scan the brains of subjects as they looked at a variety of images—including ones displaying potential contaminants such as mutilated animals, filthy toilets, and faces covered with sores—to see whether neural responses showed any correlation with political ideology. Was he interested?

Conservatives React Differently to Disgusting Pictures - The Atlantic

Very interesting..