Political scientists study whether some political identity is rooted in DNA . Theory : Political leanings related to the way individuals process information . One study found differing brain activity as liberals , conservatives processed info . Another showed that people who are more conservative on issues like abortion and gay marriage tend to have a larger amygdala ( which processes fear ) than those with liberal views.
Political scientists study whether some political identity is rooted in DNA . Theory : Political leanings related to the way individuals process information . One study found differing brain activity as liberals , conservatives processed info . No Democrat or Republican gene ; environment a huge factor .