American philosopher who in 1961 published a major study of psi phenomena, endorsing their existence and arguing that they constitute evidence for postmortem survival. This article describes and critiques his ideas. 

Manager of the Princeton Engineering Anomalies Research (PEAR) laboratory (1944-2022), whose remote viewing and psychokinesis research made important contributions to parapsychology.

Ramses D’Leon Macias, a graduate student at Mexico’s Universidad UTEL, has carried out psi research in presentiment and psychokinesis.

 Professor of philosophy at Rollins College, Orlando, Florida, who has carried out psi research, principally in the area of psychokinesis.

American lawyer, judge, and politician (1799-1874), remembered as one of the first serious investigators of séance mediums.

American psychoanalyst and paranormal investigator (1908-1998) known for his three-year study of  the ‘thoughtography’ practised by Ted Serios, and for his insightful theorising about the role of unconscious motivation in the manifestation of psi effects.

German statistician and psychologist (1932-2017) who developed the highly successful ESP 'ball selection' test, and contributed to the study of astrological influences on athletes

Professor of applied mathematics at Comillas Pontifical University in Madrid, whose research has included remote viewing and aspects of paranormal belief.

British author (1929-2011) of books on hauntings, UFOs and Fortean phenomena, co-founder of ASSAP and of the Mary Evans Picture Library.

French psychologist with a particular interest in the clinical, historical and theoretical aspects of parapsychology.