Hypnosis can look mysterious from the outside. Someone closes their eyes, listens to a hypnotist, and may appear to experience changes in perception, memory, movement, or awareness. It is natural to wonder whether the person is genuinely experiencing these effects—or simply acting as though the suggestions are working.
The short answer is that hypnotic subjects are not generally understood to be merely pretending, but expectation, motivation, social context, and imagination can all influence what happens during hypnosis. Some people respond strongly to suggestions, others respond only a little, and some experience very little. The science is more interesting than a simple choice between “real” and “fake.”
What does it mean to “play along” during hypnosis?
In everyday language, “playing along” means cooperating with a situation by acting as though something is happening, even when you do not actually experience it. In a hypnosis setting, this might mean pretending that an arm feels heavy, acting as though a hand is stuck, or behaving as if a suggested event has taken place.
That possibility is worth considering. Hypnosis takes place in a social setting, usually involving a hypnotist who gives suggestions and a participant who has agreed to follow them. Participants may have ideas about what hypnosis is supposed to look like, and they may want to be cooperative or avoid disappointing the hypnotist.
However, cooperation does not automatically mean pretense. A person can willingly follow instructions while also experiencing a genuine change in sensation, attention, perception, or the feeling of control over an action.
For example, someone might agree to imagine their hand becoming lighter. They are cooperating with the suggestion, but they may also experience the movement as happening more automatically than they expected. The experience need not be deliberately acted out.
Are hypnotic experiences genuine?
Research suggests that at least some hypnotic responses involve genuine changes in subjective experience, rather than conscious performance alone.
A person who responds to a suggestion may experience an action, sensation, or perception differently from how they ordinarily would. For example, a suggested movement may feel involuntary, or a suggested sensation may seem unusually vivid. The experience can feel real to the participant even though it arises in response to an instruction.
This does not mean that every hypnotic response is involuntary in the same way, or that every person experiences suggestions as compelling. Hypnotic responsiveness varies considerably. Some people respond to many suggestions, while others respond to few or none.
It is also important to distinguish between a genuine experience and an objectively altered external reality. If someone experiences a suggested change in sensation, that experience may be sincere and meaningful without the suggestion having changed the physical world.
Does hypnosis depend on expectation?
Expectation can play an important role in hypnosis.
People arrive with beliefs about what hypnosis will feel like and what they may be able to experience. Those beliefs can influence how they respond to suggestions. If someone expects a suggestion to produce a particular sensation or movement, that expectation may help shape the experience.
Expectations are not the whole explanation, though. Hypnosis research has examined several interacting influences, including attention, imagination, motivation, social context, and individual differences in hypnotic responsiveness.
It is therefore too simplistic to say that hypnosis works only because people expect it to work. Expectation may contribute to a response, but it does not fully account for the range of experiences observed in research.
Are people responding because they want to please the hypnotist?
Sometimes, social pressure or a desire to cooperate may influence behavior. This is particularly relevant in public demonstrations, where participants may feel that other people are watching and waiting for something entertaining to happen.
A participant might respond partly because they want to be helpful, avoid embarrassment, or meet what they believe the hypnotist expects. These influences can affect what people report and how they behave.
However, research does not support treating all hypnotic responses as nothing more than people trying to please someone. In laboratory studies, researchers can compare different conditions, measure responses, and investigate experiences that go beyond obvious outward behavior.
The more balanced conclusion is that social influences can matter, but they do not explain every hypnotic response.
What is the difference between cooperation and pretending?
This distinction is central to understanding hypnosis.
Cooperation means being willing to participate, listen to suggestions, and give the process a genuine opportunity. A cooperative participant may be curious, motivated, and open to the experience.
Pretending means deliberately acting as though a suggestion has worked when the person does not actually experience the suggested effect.
These are not the same thing. A participant can cooperate without pretending. In fact, willingness to participate is often part of the conditions in which hypnotic responses are studied.
Consider a suggestion that a person's arm feels too heavy to lift. A participant might listen carefully, imagine the sensation, and allow the suggestion to develop. If the arm then feels unusually difficult to lift, the person may be reporting a genuine experience. They have cooperated, but that does not mean they have consciously faked the result.
On the other hand, someone could deliberately imitate the response. Outward behavior alone does not always reveal which explanation applies.
Can researchers tell whether someone is pretending?
Researchers can investigate this question, but it is not always possible to determine a person's private experience simply by observing them.
Studies may use several approaches, including:
Self-reports: Participants describe what they experienced, including whether an action felt voluntary or involuntary.
Behavioral measures: Researchers observe whether participants respond to particular suggestions.
Comparison conditions: Researchers compare responses under different instructions or expectations.
Experimental controls: Researchers try to separate the effects of suggestion, motivation, social cues, and other influences.
No single measure provides a perfect window into another person's subjective experience. A participant's report is important, but researchers also consider behavior and the conditions under which the response occurs.
This is one reason hypnosis research is careful about distinguishing observable behavior from the experience accompanying it. Two people might perform the same action while experiencing it very differently.
What is the role of imagination?
Imagination is an important part of many hypnotic experiences.
A hypnotist may invite someone to imagine a sensation, picture a scene, or think about a movement happening automatically. These imaginative processes can be associated with changes in perception and experience.
But imagination should not be confused with deliberate make-believe. Imagining something can influence how a person experiences it without requiring them to pretend that it is happening.
For example, vividly imagining the taste of a lemon may produce a noticeable response, even though no lemon is present. Similarly, a hypnotic suggestion may encourage someone to imagine a sensation so vividly that it becomes part of their actual experience.
The fact that imagination contributes to an experience does not make the experience dishonest or unreal. It helps explain one way suggestions may influence what a person experiences.
Why do some people respond strongly while others do not?
People differ in hypnotic responsiveness. Some respond strongly to a wide range of suggestions, while others respond moderately or only to certain types. Some show little response under the conditions being used.
These differences are not necessarily a measure of intelligence, character, honesty, or strength of will. Nor does a weak response mean that someone is deliberately resisting or refusing to cooperate.
Researchers have studied individual differences in hypnotic responsiveness for many years. Standardized scales and experimental procedures are used to assess how people respond to different suggestions. The results show that responsiveness varies, rather than being an ability everyone experiences to the same degree.
A person who does not respond to a particular suggestion may simply not experience it in the way described. There is no need to force a response or pretend that something has happened.
Does stage hypnosis mean people are pretending?
Stage hypnosis can make the question especially confusing.
A stage show is designed to entertain an audience. Participants are selected, suggestions are delivered in a public setting, and the overall experience is shaped by the expectations of both the participants and the audience. Humor, performance, and social dynamics are part of the environment.
Some participants may be highly responsive to suggestions and experience them sincerely. Others may be influenced by the social setting or may consciously exaggerate their responses. Different participants can have different experiences within the same show.
It would therefore be inaccurate to assume that every stage participant is pretending. It would also be unwise to assume that every action seen on stage is a straightforward demonstration of what hypnosis can do in a clinical or research setting.
Stage hypnosis and clinical hypnosis have different purposes and conditions. A theatrical performance should not be treated as a scientific test of how hypnosis works.
Do scientists agree on how hypnosis works?
Not completely. Researchers have developed several theories to explain hypnotic responses, and no single theory currently accounts for every finding.
Some approaches emphasize the role of attention and changes in conscious experience. Others focus on expectations, motivation, imagination, social interaction, and the ways people interpret their own actions. Integrative approaches consider how these factors may work together.¹
For example, one person might experience a suggested movement as happening automatically because they are focused on the suggestion and expect a response to occur. Another person might experience a suggested change in sensation in a different way. The mechanisms may also differ across types of suggestion.
A 2024 systematic review of prominent theories concluded that competing explanations each have strengths and limitations, and that further research is needed to understand how hypnotic suggestions produce subjective, behavioral, and neurological responses.²
This uncertainty is important. Scientists do not need to assume that hypnosis is either a mysterious power or a form of conscious acting. They can investigate the specific processes involved and revise their explanations as evidence develops.
If hypnotic responses involve cooperation, does that make them less real?
No. Cooperation and authenticity are not opposites.
Many everyday experiences depend partly on what we expect, where we direct our attention, and how we interpret what is happening. Those influences do not automatically make an experience false.
A hypnotic participant may actively try to follow a suggestion while experiencing the resulting sensation or movement as spontaneous. Researchers have proposed that expectations and intentions can help initiate responses that subsequently feel automatic.³ That is one explanation of hypnotic experience, rather than a complete account accepted by every researcher.
It is also useful to separate three questions:
Did the person respond? This can often be assessed through observable behavior.
Did the person genuinely experience the suggested effect? This requires attention to their report and other evidence.
What caused the response? This is a scientific question that may have more than one contributing answer.
A response can be genuine even when cooperation, expectation, and imagination contribute to it. At the same time, a person’s sincere belief that a suggestion worked does not establish that every interpretation of the experience is scientifically correct.
How can you tell whether a hypnotist is encouraging genuine responses?
A responsible hypnotist should not pressure participants to claim experiences they have not had. Instead, the process should leave room for individual differences and honest feedback.
Look for an approach that:
Explains hypnosis without promising extraordinary or guaranteed results.
Invites participation rather than demanding a particular reaction.
Respects a participant's right to decline a suggestion.
Accepts that people respond differently.
Avoids treating hesitation or limited responsiveness as a personal failure.
Distinguishes entertainment from scientific evidence and clinical care.
If you try hypnosis yourself, you do not need to manufacture an experience to satisfy the hypnotist. You can follow the instructions, notice what happens, and report your experience honestly.
If a suggestion does not work for you, that is useful information—not proof that you are doing hypnosis incorrectly.
What should you conclude about hypnotic subjects?
The idea that hypnotic subjects are just playing along is too simplistic.
Some participants may consciously perform or exaggerate responses, particularly in settings where entertainment or social expectations are prominent. Cooperation and expectations can also influence responses without conscious pretense. Other participants report genuine changes in sensation, perception, movement, or their sense of control.
The scientific challenge is to understand how these influences interact and why people differ in their responses. Researchers continue to debate the mechanisms, but contemporary research does not support reducing every hypnotic experience to deliberate acting.²
The most helpful approach is to avoid both extremes: assuming every hypnotic response proves that hypnosis creates a special state of consciousness, or assuming every response is fake. The evidence points to a more nuanced picture involving human attention, suggestion, expectation, individual differences, and subjective experience.
A concise summary
Hypnotic subjects are not necessarily pretending. Some responses may be influenced by social pressure or a desire to cooperate, but cooperation does not mean conscious acting. People can experience suggested sensations and actions as genuine, sometimes with a reduced sense of deliberate control. Researchers continue to investigate how expectation, attention, imagination, motivation, and other factors contribute to these effects. The best conclusion is that hypnotic responses can be authentic, while their causes and intensity vary from person to person.
Notes
1. Steven Jay Lynn, Jean-Roch Laurence, and Irving Kirsch, “Hypnosis, Suggestion, and Suggestibility: An Integrative Model,” American Journal of Clinical Hypnosis 57, no. 3 (2015): 314–29.
2. Anoushiravan Zahedi, Steven Jay Lynn, and Werner Sommer, “How Hypnotic Suggestions Work: A Systematic Review of Prominent Theories of Hypnosis,” Consciousness and Cognition 123 (2024): 103730.
3. Irving Kirsch and Steven Jay Lynn, “Hypnotic Involuntariness and the Automaticity of Everyday Life,” American Journal of Clinical Hypnosis 40, no. 1 (1997): 329–48.