The Psi Encyclopedia is a collection of articles and case studies about psi research, the scientific investigation of psychic phenomena. It's a work in progress, being created by the Society for Psychical Research in London. Learn more >

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American philosopher and parapsychologist, notable for his PK research and for commentary on trance mediumship and survival evidence, in particular his defence of the 'living agent' (super-psi) hypothesis. 

Mexican born in 1904 who at age six exhibited a remarkable ability to calculate calendar dates and days at high speed, rarely making mistakes. 

Therapeutic approach that aims to provide practical help in a counselling context for people who are disturbed by anomalous events like precognitive dreams and poltergeist-type disturbances.

Russian psychic investigated in the late 1920s for her ability to cause words and images that she received telepathically from other people to appear briefly as red marks on her skin. 

Tory politician and philosopher (1848-1930) with an interest in psychical research, associated in particular with the Palm Sunday case, a notable mediumship episode.