Scientists claim that conservatives are just born scared of everything
I'm being snarky, what they have really found is that Conservatives are more tuned to environmental dangers (Tigers, etc) and are therefore very concerned about keeping the status quo. They're positing that genetically we have different responses to surprise and that those end up forming our political views later in life.
Compared to staunch liberals, people with strongly conservative views were three times more fearful after factoring out the effects of gender, age, income and education, all of which can affect political attitudes.
Kevin Smith, a professor of political science at the University Nebraska, Lincoln and a study author, said conservatives were more vigilant to environmental threats and speculated this innate tendency led them to support policies that protect the social order.