American-Canadian psychology professor and psi experimenter (1945-2018) noted for his ‘god helmet’, a device he claimed could induce paranormal-seeming experiences in the wearer by means of a weak magnetic field.

Mikhail Petrovo-Solovovo (1868-1954) was a Russian diplomat and psychical researcher with a particular interest in physical mediumship.

John George Piddington (1869-1952) was a successful British businessman who played a leading role in the Society for Psychical Research, notably in the investigation of mental mediumship.

Frank Podmore (1856-1910) played a significant role in the early years of the Society for Psychical Research, initially as an investigator, later as a proponent of mainly non-paranormal interpretations of psi phenomena.  

American psychiatrist who has conducted successful ESP research with autistic children.

South African-born zoologist and author, a former president of the Society for Psychical Research, with particular interests in out-of-body experiences and the thought of philosopher Michael Whiteman.

American psychologist and parapsychologist (1910–1979) best known for successful ESP experiments at Duke University and for extensive later research with Pavel Štěpánek, a Czech psychic.

Harry Price (1881-1948) was a British paranormal investigator, who caused controversy with numerous high-profile investigations of hauntings and other psychic phenomena. 

English novelist and playwright (1894-1984). Many of his works were constructed around the concept of time and precognition, topics of particular interest in the domain of psychical research.

Episcopal minister and parapsychologist (1863-1934) known for his ‘Doris Fischer’ study, a notable early twentieth century American case of dissociative identity disorder. He also wrote extensively about telepathy and mediumship.