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.

British-born psychical researcher and author (1880-1958) resident in the USA, noted in particular for his participation in a landmark investigation of the physical medium Eusapia Palladino. 

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

Arthur Chattock (1860-1934) was a British physicist who carried out telepathy experiments, now of mainly historical interest.

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.