Dowsing is a type of divination employed in attempts to locate ground water, buried metals or ores, gemstones, oil, claimed radiations (radiesthesia),[1]gravesites,[2] malign "earth vibrations"[3] and many other objects and materials without the use of a scientific apparatus. It is also known as divining (especially in water divining),[4]doodlebugging[5] (particularly in the United States, in searching for petroleum or treasure)[6] or water finding, or water witching (in the United States).
A Y-shaped twig or rod, or two L-shaped ones, called dowsing rods or divining rods are normally used, and the motion of these are said to reveal the location of the target material. The motion of such dowsing devices is generally attributed to random movement, or to the ideomotor phenomenon,[7][8][9] a psychological response where a subject makes motions unconsciously.
^Zusne, Leonard; Jones, Warren H. (1989). Anomalistic Psychology: A Study of Magical Thinking. Lawrence Erlbaum Associates, Inc. pp. 105–110. ISBN978-0-805-80507-9
^Novella, Steve; Deangelis, Perry. (2002). Dowsing. In Michael Shermer. The Skeptic Encyclopedia of Pseudoscience. ABC-CLIO. pp. 93–94. ISBN1-57607-654-7 "Despite widespread belief, careful investigation has demonstrated that the technique of dowsing simply does not work. No researcher has been able to prove under controlled conditions that dowsing has any genuine divining power... A more likely explanation for the movement of a dowser's focus is the ideomotor effect, which entails involuntary and unconscious motor behavior."
^Lawson, T. J; Crane, L. L. (2014). Dowsing Rods Designed to Sharpen Critical Thinking and Understanding of Ideomotor Action. Teaching of Psychology 41 (1): 52–56.
^Vogt, Evon Z.; Ray Hyman (1979). Water Witching U.S.A. (2nd ed.). Chicago: Chicago University Press. ISBN978-0-226-86297-2. via Hines, Terence (2003). Pseudoscience and the Paranormal (Second ed.). Amherst, New York: Prometheus Books. p. 420. ISBN978-1-57392-979-0.