You may be interested in reading "Paranormality" by Richard Wiseman for a psychological explanation of why people believe in/experience ghosts, faith healings, alien abductions, telekinesis etc.
For any study into the "paranormal" you have to be very critical about the methodology - is the research being conducted in a scientific manner, are there proper controls, does the conclusion follow from the data or are people reading meaning from the data that is not there.
For any study into the "paranormal" you have to be very critical about the methodology - is the research being conducted in a scientific manner, are there proper controls, does the conclusion follow from the data or are people reading meaning from the data that is not there.