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TED-Ed

Does hypnosis ever actually work? - Devin Terhune

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In the 19th century, Scottish surgeon James Braid revolutionized the field of hypnotism, transitioning the practice towards inducing a sleep-like state. Today, hypnosis is used in psychiatry as a helpful medical tool, yet it still holds an entrancing place in popular fantasy. So, is there any truth to what it can accomplish? Or is it just illusion? Devin Terhune explores the power of suggestion.

Additional Resources for you to Explore

One of the principal elements of hypnosis is the use of verbal suggestions to alter awareness, perception, emotion and behavior. Although suggestions are often strikingly effective in the context of hypnosis, they can also be shown to be of great value in other areas. To learn more about suggestion effects, watch/read these TED-ED entries on placebo effects, and nocebo effects.

Verbal suggestions reflect a clear example of the power of language to shape our cognition and perception in various ways. Although suggestions are conceptually distinct from other linguistic devices that are often used to “influence” people, they have some overlap. To learn more about these effects, watch/read this TED-ED entry on the art of persuasive speech and how language can shape the way we think.

Although not discussed in the article, one way that hypnotic suggestions may impact perceptions is creating set of precise predictions (priors) that subsequently influence their perception. Some similar ideas are considered in this TED-ED video on how your brain may be hallucinating your reality.If you want to delve into more formal, academic work, consider reading these different articles on the cognitive neuroscience of hypnosis.

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Meet The Creators

Educator
Devin Terhune
Director
Leah Putnam
Narrator
Jack Cutmore-Scott
Composer
Stephen LaRosa
Sound Designer
Stephen LaRosa
Director of Production
Gerta Xhelo
Produced by
Abdallah Ewis
Editorial Director
Alex Rosenthal
Editorial Producer
Cella Wright
Script Editor
Rachel Yang