American psychologist and parapsychologist (1926-2012) noted for reports of dramatic poltergeist phenomena, which he attributed to unconscious psychokinesis in emotionally disturbed young persons.

Episode of the 'poltergeist' type in a Scottish village in 1960, in which psychokinetic activity appeared to centre on an eleven-year old girl. 

Mid-nineteenth century poltergeist case, in which a Swiss family was tormented for weeks by loud knocks and raps, furniture being hurled about, doors and windows slamming, and ghostly shapes and footsteps. 

Poltergeist case investigated by Joseph Glanvill, a member of the newly-created Royal Society, making it one of the first paranormal episodes to receive serious scrutiny.  

A Viennese member of the Society for Psychical Research briefly describes a case where tools and other objects are flung around a workshop, causing damage and sometimes hitting the occupants. 

Original report by an SPR investigator of poltergeist-type disturbances in 1883  the home of a horse-dealer in Worksop, in the north of England.