Hauntings and Poltergeists: A Ghost Hunter's Guide | Loyd Auerbach
Apparitions, Hauntings and Poltergeists - Ghosts - Have Fascinated philosophers and scientists for millennia. Parapsychologists have made significant inroads into understanding what is really going on. Hauntings seem to be a kind of recording that becomes attached to a place or object and keeps replaying. Poltergeist is a kind of paranormal stress relief valve. Dubbed noisy ghosts, poltergeists are actually the manifestation of rage or another intense emotion of an "agent" who is often, but not always, a teenager.