Scottish physicist (1828-1887) who was interested in psychical research and co-authored The Unseen Universe (1875), a much-discussed attempt to reconcile modern physics with Christianity.

Australian psychologist and parapsychologist who uses innovative statistical and methodological approaches to help understand both normal and anomalistic psychology.

British physicist (1875-1947) who designed a method of using infrared photography in the investigation of physical mediumship.

René Sudre (1880-1968) was a French science journalist active in psi research during the 1920s.

Barry Taff is an American author and investigator of hauntings, UFOs and alien abduction phenomena

American psychiatrist (1961-2002) and pioneer in the field of mind-body medical research, whose 1999 study on the effect of prayer on AIDS patients was the cause of controversy.

American physicist, laser pioneer and parapsychologist who collaborated with Harold Puthoff in the study of remote viewing, the basis of the psychic intelligence-gathering programme known as Star Gate.

Jeff Tarrant is an American psychologist and neurofeedback specialist who has carried out experiments with psychics, mediums and energy healers.

American psychologist and parapsychologist who was internationally known for research on the nature of consciousness and has experimented widely in psi and out-of-body experiences.

Jon Taylor is a Cambridge-trained scientist and author who has developed physical theories of precognition and intuition, bridging quantum physics and neuroscience.