Researchers found that liberals and conservatives have different brain structures, different physiological responses to stimuli, and activate different neural mechanisms when confronted with similar situations, according to 13 peer-reviewed scientific studies summarized by ProCon.org.

Some reported differences studies named included the following: conservatives spend more time looking at unpleasant images and liberals spend more time looking at pleasant images; conservatives have stronger motivations than liberals to preserve purity and cleanliness; and liberals have more tolerance to uncertainty while conservatives have more sensitivity to fear.

To read the ProCon.org article, click here.