So apparently: Left wing or right wing? It's written in the brain
People with liberal views tended to have increased grey matter in the anterior cingulate cortex, a region of the brain linked to decision-making, in particular when conflicting information is being presented...
Conservatives, meanwhile, had increased grey matter in the amygdala, an area of the brain associated with processing emotion.
This was based on a study of 90 young adults using MRI to measure brain structure. Sadly that press release is all we know about the study at the moment, because it hasn't been published yet. The BBC also have no fewer than three radio shows about it here
