We knew liberals were different, but just how different is revealed in a new study of the human brain indicating that not only do liberals and conservatives share different moral sentiments, but that markedly differing brain structures underlie those sentiments.

The study’s “findings demonstrate that variation in moral sentiment corresponds to individual differences in brain structure and suggest that moral values possess deep-rooted biological bases distributed across distinct brain regions,” say University of California, Santa Barbara, post-doctoral researcher Gary J. Lewis and three research collaborators in the August 2012 issue of the Journal of Cognitive Neuroscience (JCN).

“People differ in their sentiment for societally important moral and political values, and those differences are not simply observable in the voting booth, but can also be detected at the level of neuroanatomy,” Lewis told Human Events in an August interview.