British psychical researcher (1892-1947) who pioneered the use of quantitative methods based on word association tests in the investigation of mediumship.

American clinical psychologist, psychotherapist and parapsychologist, best-known for his innovative First Sight Theory, which posits that psi phenomena are integral to normal perception and action.

Cosmologist and author, and a former president of the Society for Psychical Research. Carr's research interests centre on a theory of physics capable of accommodating psi phenomena.

German-born author and researcher (1920-2003) with wide interests in psychical research.  

British teacher (1913-2010), priest and author of books mainly on theology, who in later life pursued an interest in psychical research, in particular reincarnation.

British psychologist who carries out research in parapsychology and thanatology, and in media appearances promotes critical thinking in science.

Investigator associated with the Society for Psychical Research (1923-2010) who authored reports on poltergeist and haunting cases, some in collaboration with fellow parapsychologist Alan Gauld.

William Crawford (1881-1920), a college lecturer in mechanical engineering, is known for his investigation of paranormal phenomena produced by a Spiritualist circle in Belfast.

English geologist (1890-1981) who published collections of out-of-body experiences as evidence of ‘astral projection’ and postmortem survival.

British scientist who carried out controversial experiments with Daniel Home and other mediums in the 1870s. His claim to have discovered a new ‘psychic force’ was  contested by other scientists, but his reports continue to be widely discussed.