THE BIOGRAPHICAL DICTIONARY OF PARAPSYCHOLOGY
Physician. B. July 30, 1914, Rotterdam, Netherlands. M.D., 1938, University of Leiden. M. 1940, Alida Johanna Frederika Hulscher: 1 d., 3 s. Medical officer, Netherlands Army, 1938-40; private practice, Amersterdam, since 1941. Research officer, Amsterdam Foundation for Parapsychological Research (since 1959): board member, Dutch Society for Psychical Research (since 1958); board member, Foundation for the Investigation of Paranormal Healing (since 1955); present, Parapsychological Circle, Amsterdam.
In the field of parapsychology, Dr. Kappers is particularly interested in unorthodox healing, clairvoyance, and spontaneous cases of psi phenomena, especially haunting. With Arie Mak (q.v.), F. v.d. Berg and A. H. de Jong, he completed an investigation of pure clairvoyance using apparatus devised by Mak, a report on which was published in Tijdschrift voor Parapsychologie in 1957.
Dr. Kappers also completed an attempt to evaluate astrological findings statistically (with negative results) and at present is engaged in two investigations: an inquiry among residents of Amsterdam into the spontaneous occurrence of paranormal phenomena, and a study of paranormal occurrences among subjects during use of hallucinogens. He is an editor of the bimonthly Spiegel der Parapsychologie, to which he has contributed articles, and author of the article "The Investigation of Spontaneous Cases" (Tijdshcrift voor Parapsychologie, 1954). Residence and business address: Oosterpark 84, Amsterdam, Netherlands.
Taken from Helene Pleasants (1964) Biographical Dictionary of Parapsychology with Directory and Glossary 1946-1996 NY: Garrett Publications