Radiesthesia, Disciplines
Standing
Concerns Replication Status
Currently States The Munich dowsing trials of the late 1980s tested more than 500 self-identified dowsers across more than 10,000 trials attempting to detect a concealed water pipe under blinded conditions and found performance consistent with chance; radiesthesia rests on the same claimed sensitivity and has not been shown to perform better in comparable blinded tests.
Between 1987 and 1989, physicists including Betz working with Wagner and Koenig ran a large double-blind trial in Munich testing more than 500 self-identified dowsers across more than 10,000 individual trials attempting to detect a concealed water pipe. J. T. Enright's Testing Dowsing: The Failure of the Munich Experiments (Skeptical Inquirer, 1999) reports on that trial. The method was blinded experimental testing: dowsers attempted to locate the pipe's position without sensory cues, and their results were scored against the true, concealed location. The trial found dowsers performed no better than chance across the full set of trials. Radiesthesia, the wider practice of sensing hidden qualities including water or disease by pendulum or similar means, claims the same underlying sensitivity Munich tested directly, and no comparable blinded trial of it has shown better than chance performance either. Because the largest dedicated test of the claimed ability found no effect, the atlas records the claimed sensitivity as unsupported by controlled testing.
Source Testing Dowsing: The Failure of the Munich Experiments, J. T. Enright