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Is hypnosis a special state – or expectation at work?
Listen instead of reading · 35 minDirty Mind: Dirty Talk Hypnosis – Find Your Own WordsNo script, no borrowed lines: a trance that lets your own words out – in a lower, slower voice. In short
Researchers disagree. State theories describe hypnosis as a distinct state of focused attention and reduced peripheral awareness, supported by brain changes during hypnosis. Sociocognitive theories explain the same effects through expectation, motivation and the social situation, supported by experiments where instructions and beliefs change the results. Most current researchers accept parts of both and focus on what each explains.
Key facts
- The APA Division 30 definition describes hypnosis as a state of focused attention with increased response to suggestion (Elkins et al., 2015).
- Orne (1959) showed that people simulating hypnosis can reproduce much hypnotic behaviour, so experiments need simulator controls.
- Kirsch (1985) proposed that expecting an automatic response can produce it.
- Hilgard's 'hidden observer' supported divided-consciousness theories, but its reports changed with the wording of instructions.
- Brain imaging shows group-level changes during hypnosis in highly hypnotizable people (Jiang et al., 2017).
Two ways to explain the same arm
A hypnotized person’s arm rises, and they say they didn’t lift it. One camp says: hypnosis has changed how control and awareness are organised – a state. The other says: the person expects the arm to rise on its own, wants to respond well, and interprets small movements as involuntary – ordinary sociocognitive processes.
Evidence that pushed the debate
- Simulators. Orne (1959) asked some participants to fake hypnosis without the experimenter knowing. They reproduced a surprising amount of hypnotic behaviour. Since then, good studies control for what simulators can do.
- Trance logic. Orne also reported that hypnotized people tolerate contradictions more than simulators. Later studies found the difference less reliable.
- The hidden observer. Hilgard found a “hidden part” that reported pain the hypnotized person did not report – evidence for divided consciousness. Spanos then showed that the hidden observer’s reports followed the instructions given.
- Expectancy. Kirsch (1985) argued that response expectancies produce the experiences they predict, linking hypnosis to placebo effects.
- Brain imaging. Studies such as Jiang et al. (2017) show distinct activity and connectivity during hypnosis in highly hypnotizable people – compatible with a state, though not proof of one.
Where the field stands
The official working definition (Elkins et al., 2015) uses the word “state”, but the debate is not over. Recent reviews treat hypnosis as a way to study how expectations and intentions regulate experience from the top down (Terhune et al., 2017). For Hypnolab, the interesting question is not which label wins, but what a given experiment actually rules out.
Questions
Is hypnosis just role-playing?
Not simply. Social expectations and motivation clearly shape hypnotic behaviour, but responsive people often report that suggested experiences feel truly involuntary, and some effects appear in brain measures. Role-playing explains part of the picture, not all of it.
What is the state versus non-state debate?
It is the question of whether hypnosis involves a special state of consciousness or is better explained by ordinary psychological processes such as expectation, attention and motivation. The debate has shaped how hypnosis experiments are designed since the 1950s.
Who is right?
Neither side has a decisive experiment. Many researchers now treat the question as less important than finding out which mechanisms explain which effects, and in whom.
Terms on this page
- Hypnosis Hypnosis is a state in which you turn your attention fully inward and engage with your imagination – so much that it feels real, like an arm growing heavy.
- Response expectancy Response expectancy means: if you firmly expect something to happen on its own – calm, a light arm – that very expectation can help bring it about.
- Demand characteristics Demand characteristics are the small cues in a situation that reveal what is expected of you – and that influence how you behave.
- Dissociation (in hypnosis research) In hypnosis research, dissociation means: something happens, but it does not feel as if you are doing it – like an arm that seems to rise by itself.
- Trance logic Trance logic means that people in hypnosis calmly accept contradictions that would bother them immediately when awake – similar to a dream.
Studies on this page
- Definition · 2015 Advancing research and practice: The revised APA Division 30 definition of hypnosis Elkins, G. R., Barabasz, A. F., Council, J. R., & Spiegel, D. (2015). Advancing research and practice: The revised APA Division 30 definition of hypnosis. International Journal of Clinical and Experimental Hypnosis, 63(1), 1–9.
- Theory · 1959 The nature of hypnosis: Artifact and essence Orne, M. T. (1959). The nature of hypnosis: Artifact and essence. Journal of Abnormal and Social Psychology, 58(3), 277–299.
- Theory · 1985 Response expectancy as a determinant of experience and behavior Kirsch, I. (1985). Response expectancy as a determinant of experience and behavior. American Psychologist, 40(11), 1189–1202.
- Theory · 1973 A neodissociation interpretation of pain reduction in hypnosis Hilgard, E. R. (1973). A neodissociation interpretation of pain reduction in hypnosis. Psychological Review, 80(5), 396–411.
- Experiment · 2017 Brain activity and functional connectivity associated with hypnosis Jiang, H., White, M. P., Greicius, M. D., Waelde, L. C., & Spiegel, D. (2017). Brain activity and functional connectivity associated with hypnosis. Cerebral Cortex, 27(8), 4083–4093.
- Review · 2017 Hypnosis and top-down regulation of consciousness Terhune, D. B., Cleeremans, A., Raz, A., & Lynn, S. J. (2017). Hypnosis and top-down regulation of consciousness. Neuroscience & Biobehavioral Reviews, 81, 59–74.
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