Correlations between poltergeist cases is one aspect of links found among documented cases of paranormal phenomena. Examples are provided in an excerpt from the article“Links Between ‘Poltergeist’ Cases”:
Playfair also acknowledged, “The poltergeist, or at any rate one of them, seemed to have a sense of humour.” He explained:
One night, the Harpers watched fascinated as a slipper performed a little dance balanced on the edge of the headboard of Janet’s bed, bending double as if it were being manipulated like a glove puppet. On another occasion, a poster that had fallen off the wall slid up from the floor and peeped over the same headboard.
One night, I sat on the landing eating a sandwich as quietly as I could, when from the bedroom one of the Voices suddenly announced that it wanted a biscuit. Mrs. Harper looked at Janet, who was well tucked up with her hands out of sight, when to her amazement a biscuit just appeared out of nowhere, stuck in Janet’s mouth.