You wake up one morning to a phone call. On the other end, a friend’s voice excitedly tells you that he knows where to find a leprechaun’s pot of gold in a nearby park. Do you want to come help him dig for it? If you are a normal person, you will roll your eyes, hang up, and (hopefully) go back to sleep. But according to new research from the University of Iowa, if you have damage to a specific area of your neocortex related to doubt and skepticism, you might jump up and start looking around for your shovel. And guess what – if so, you’re also more likely to be a religious fundamentalist.