Technique used by mentalists to determine the thoughts or knowledge of a subject
Muscle reading, also known as "Hellstromism", "Cumberlandism" or "contact mind reading", is a technique used by mentalists to determine the thoughts or knowledge of a subject, the effect of which tends to be perceived as a form of mind reading. The performer can determine many things about the mental state of a subject by observing subtle, involuntary responses to speech or any other stimuli.[1][2] It is closely related to the ideomotor effect, whereby subtle movements made without conscious awareness reflect a physical movement, action or direction which the subject is thinking about. The term "muscle reading" was coined in the 1870s by American neurologist George M. Beard to describe the actions of mentalist J. Randall Brown, an early proponent of the art.[3][4]
^Christopher, Milbourne. (1996). The Illustrated History of Magic. Greenwood Publishing Group. p. 389
^Gardner Martin. (2012 edition, originally published in 1957). Fads and Fallacies in the Name of Science. Dover Publications. ISBN 0-486-20394-8 "The unwitting translation of thoughts into muscular action is one of the most firmly established facts of psychology. In individuals particularly prone to it, it is responsible for such "occult" phenomena as the movement of a Ouija board, table tipping, and automatic writing. It is the basis of a type of mind reading known in the magic profession as "muscle reading." Someone hides a pin in a room, and the performer finds it quickly by having a spectator take hold of his hand. The spectator thinks he is being led by the magician, but actually the performer permits the spectator to lead him by unconscious muscular tensions. Many famous muscle readers are able to dispense with bodily contact altogether, finding the hidden object merely by observing the reactions of spectators in the room."
^Jay, Ricky (1986). Learned Pigs and Fireproof Women. New York City: Villard Books. p. 175.
^During, Simon. (2004). Modern Enchantments: The Cultural Power of Secular Magic. Harvard University Press. p. 162. ISBN 978-0674013711
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Gillett, S. Christopher (2002). Psychophysiological Thought Reading, or, MuscleReading and the Ideomotor Response Revealed. Houston, Texas: Magic Inspirations...