“After analyzing the DNA of 13,000 Australians, scientists recently found several genes that differed between liberals and conservatives.15 Most of them related to neurotransmitter functioning, particularly glutamate and serotonin, both of which are involved in the brain’s response to threat and fear.”

“After analyzing the DNA of 13,000 Australians, scientists recently found several genes that differed between liberals and conservatives.15 Most of them related to neurotransmitter functioning, particularly glutamate and serotonin, both of which are involved in the brain’s response to threat and fear.”

— Jonathan Haidt