Nineteenth-century journalist, author, social reformer and medium, author of Letters from Julia (1909), automatic writings said to contain communications from a deceased friend on the subject of afterlife conditions. 

Philosopher who has carried out psi research in Germany and Britain, principally on mind-matter effects and precognition.

British psychologist who has carried out parapsychological research emphasizing the role played by the environment in psi expression. 

Canadian-born psychiatrist based at the University of Virginia, best known for his pioneering work on the phenomenon of past life memories among young children, as described in his landmark study Twenty Cases Suggestive of Reincarnation.

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.