British physicist (1844–1925) and co-founder of the Society for Psychical Research. He wrote on telepathy and clairvoyance, apparitions, mediumship, dowsing, deathbed visions, and related topics.

British lawyer (1926–2020) who campaigned for animal rights and voluntary euthanasia, a longtime vice-president of the Society for Psychical Research and investigator of paranormal phenomena.

Canadian psychologist and author specializing in consciousness studies, including altered states, self-transformation, and beliefs about consciousness and reality.

Physicist based in Brussels, a specialist in complexity science and nonlinear systems, with interests in how consciousness interacts with aspects of the physical world.

Austrian philosopher, cognitive scientist and psychotherapy researcher, based in Liechtenstein. His research interests include anomalous phenomena surrounding death and dying.

German psychologist and parapsychologist, whose research interests include biographical, cultural and historical aspects of spiritism, occultism and psychical research in Germany.  

Raymond Bayless (1920–2004) was an American landscape painter and author of books on psychical phenomena.

Director of research and co-founder of the Windbridge Research Center in Arizona, which researches survival of consciousness and the therapeutic benefits of consulting mediums.

John Beloff (1920–2006) was a British psychologist, philosopher and parapsychologist, the author of numerous scholarly books and articles on the philosophy of mind and psi-related topics. 

Daryl Bem, a social psychologist and professor emeritus at Cornell University, has carried out psi research, including landmark experiments in precognition and presentiment.