Likewise for having visions and hallucinations. These are quite natural, even if unusual and infrequent, in people with normal as well as with very active imaginations. They walk around with some electronic device that picks up electromagnetic fields, and if the needle jumps around they claim they have evidence of poltergeist activity. Why electromagnetism should be identified with ghosts or devils, I have no idea. Just about everything gives off some level of electromagnetic radiation.
Some animals even have the ability to sense electric fields.
There are also a number of cases of reported haunted houses which turn out upon thorough investigation to have been instigated by disturbed teenagers trying to get attention by scaring the devil out of their parents and siblings. Haunted houses are great fun at Halloween, though certain devout Christians find them, along with witches and goblins, to be diabolical. No one really thinks these Halloween houses are haunted. People go to them because we like to be scared out of our wits. I have no idea.