That study found that compared to liberals, conservatives tend to have larger amygdalas and smaller anterior cingulate cortexes (ACC), which are involved in error detection, impulse control and emotional regulation.

A groundbreaking new study has reignited the debate over whether political ideology is linked to brain structure.

The roots of conservatism may be buried deep in the brain, scientists believe, after finding right-wingers have more gray matter in an area linked to threats and uncertainty.