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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Scottish philosophy professor (1916-1989) who participated in telepathy experiments and published commentary on psychical research.

British mathematician and engineer (1920-1971) who carried out experiments and scholarly studies in psychical research.

The IGPP is a German parapsychology organization based in Freiburg that carries out experimental psi research and offers educational and counselling services. 

South African-born (1939-2008) zoologist, anthropologist and author of books about science and the paranormal. The popular metaphor ‘hundredth monkey’ was coined by him.

Doris Stokes (1920-87) was a controversial celebrity medium who was much in the public eye in Britain during the 1980s.