Time describes a study conducted in 2001 where 80 participants were asked to meditate using crystals. Ahead of time, the research subjects had filled out a questionnaire gauging their belief in paranormal phenomena. For meditation purposes, half of the subjects were given a quartz crystal, while the rest had a "crystal" made of glass that they were told was real.
While many subjects reported feeling tingling and vibration while holding their meditation aids, there was no difference between the group with the real crystals and the one whose crystals were bogus. Perhaps not surprisingly, subjects in either group who'd self-reported stronger belief in the paranormal felt more powerful sensations. Christopher French, psychology professor at Goldsmiths, University of London, interpreted the results to mean that crystal healing is basically "a result of the power of suggestion, not the power of the crystals."
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