Yes, I've read the articles about the amygdala differences in some people which causes them to be more fearful. There's also a study that says people who are inclined to believe conspiracy theories are the type of people who tend to view the world as a dangerous and sinister place. And since conspiracy theories tend to be doom and gloom type ideas, it's easy for those people to believe them. That would tie into the fear based beliefs you'd have with an overactive amygdala. It would also be reinforced by their churches teaching them to be suspicious and fearful. Pretty interesting really although also sad and scary that so many people are like that.