New Zealand-born journalist and novelist (1911–2001) who also wrote and reviewed books about psychical research.

Wealthy landowner and philanthropist (1873-1913) who became Mexico's 37^th president and whose career was profoundly influenced by his mediumship activities and spritist beliefs.

German psychologist whose work in consciousness theory has extended to include experiments in psychokinesis and precognition.

Brazilian psychologist with research interests in the psychology of non-ordinary experiences, spirituality, religion and health.

Fench existentialist Roman Catholic philosopher (1889-1973) who as a young man was actively involved in psi research in France, and speculated on the ways in which psi might operate.

Betty Markwick (b 1933) is a British mathematician and statistician, credited with having uncovered fraud in ESP experiments by SG Soal.

CC Massey (1838-1905) was an English barrister, Theosophist, and founding member of the Society for Psychical Research.

American anthropologist and leading reincarnation researcher (b 1954) with a comprehensive, multicultural and interdisciplinary approach. 

German psychologist, director of the Gesellschaft für Anomalistik, with a particular interest in cultural studies and interdisciplinary approaches relating to parapsychology and anomalistics.

Rollin McCraty is an American psychophysiologist who has carried out research in the relationship between heart and mind.