Most people can be hypnotized to some degree. Roughly 65% to 75% of the general population falls into a moderate range of hypnotic responsiveness, meaning they’ll respond to at least some hypnotic suggestions even if they don’t experience the deepest trance states. About 10% to 15% are highly hypnotizable, while 15% to 20% show very low responsiveness and may not experience meaningful effects at all.
What Determines Your Hypnotizability
Hypnotizability is primarily a cognitive trait, not a personality quirk. Brain imaging studies at Stanford found that highly hypnotizable people have stronger functional connectivity between two key brain areas: one involved in executive control (decision-making and focused attention) and another involved in detecting and filtering sensory and emotional information. In people with low hypnotizability, these two regions showed very little coordination. In practical terms, this means the ability to be hypnotized depends less on whether you “believe in it” and more on how your brain naturally handles attention and information filtering.
Genetics play a role too. A gene involved in dopamine regulation has been linked to hypnotizability in multiple studies. In one replication study of 127 adults, people with one version of this gene scored an average of 5.9 on a standard hypnotizability scale, while those with a different version scored 4.1. That’s a meaningful gap on a 12-point scale, and it suggests your biological baseline matters before any suggestion is ever spoken.
Personality Traits That Predict Responsiveness
One psychological trait consistently associated with higher hypnotizability is “absorption,” the tendency to become fully immersed in experiences like music, movies, daydreams, or nature. People who lose track of time while reading or feel emotionally transported by a film tend to score higher on hypnotizability scales. Related to this, people who are open to experience and prone to vivid fantasy also tend to respond more strongly to hypnotic suggestions.
That said, Stanford researchers emphasize that hypnotizability is more about cognitive style than personality variables. You can be a skeptical, analytical person and still be highly hypnotizable if your brain’s attention networks are wired for it. Conversely, someone who seems imaginative and open might score low if those neural connections aren’t as strong.
How Hypnotizability Changes With Age
Children are generally more responsive to hypnotic suggestions than adults, but what’s happening in their brains is fundamentally different. Hypnotic responsiveness increases sharply around age 8, peaks somewhere in late childhood, and then gradually declines into adulthood before stabilizing. Young children under 8 respond to hypnosis in a qualitatively different way. They rely more on direction from authority figures and haven’t fully developed the executive cognitive functions that older children and adults use during hypnosis. Their experience looks more like compliance and imaginative play than the focused internal absorption that characterizes hypnosis in adults.
Once you reach adulthood, your level of hypnotizability becomes remarkably stable. A landmark longitudinal study tested the same group of people over 25 years and found their scores barely budged. The correlation between initial scores and scores 25 years later was 0.71, and the median change per person was just 1 point on a 12-point scale. This stability rivals that of well-established personality traits. If you’re highly hypnotizable at 25, you’ll very likely still be highly hypnotizable at 50.
How Hypnotizability Is Measured
Clinicians don’t guess whether someone can be hypnotized. They use standardized scales that walk a person through a series of suggestions, starting simple and getting progressively more challenging. The gold standard, the Stanford Hypnotic Susceptibility Scale (Form C), takes about 50 minutes and includes 12 items ranging from basic motor responses to difficult tasks like posthypnotic amnesia. Each item is scored pass or fail, producing a total between 0 and 12.
A newer option, the Elkins Hypnotizability Scale, takes about 25 minutes and moves through six items: arm heaviness, arm lightness, mental imagery and dissociation, smell-based hallucination, visual hallucination, and posthypnotic amnesia. The assessor records both what they observe and what the person reports experiencing, combining behavioral and subjective data into a final score. This scale was designed to be more pleasant and practical for clinical settings while still capturing the core dimensions of hypnotic responsiveness.
Mental Health Conditions and Suggestibility
Certain psychological conditions are associated with elevated hypnotic suggestibility. A meta-analysis of 20 datasets found that people with dissociative disorders scored significantly higher on hypnotizability measures than controls, with a large effect size. This makes theoretical sense: dissociation involves shifts in awareness and identity that share cognitive mechanisms with hypnosis. The elevated suggestibility was observed across several related conditions but was most pronounced in dissociative disorders specifically.
This doesn’t mean that being highly hypnotizable indicates a mental health problem. The vast majority of highly hypnotizable people are psychologically healthy. It does mean that the same cognitive architecture that enables deep hypnotic experiences, the ability to shift attention, filter reality, and absorb into internal states, overlaps with the mechanisms involved in certain clinical conditions.
Why Some People Cannot Be Hypnotized
For the 15% to 20% of people who score in the low range, the limitation is neurological rather than motivational. Wanting to be hypnotized isn’t enough. Brain imaging shows that low-hypnotizable individuals simply have less coordination between the brain areas responsible for executive control and salience detection. No amount of relaxation, trust, or willingness can override that wiring.
Situational factors can reduce responsiveness in people who might otherwise score higher. Fear, distrust of the hypnotist, an inability to relax in the testing environment, or active attempts to analyze the experience rather than go along with it can all suppress responsiveness. But these are temporary barriers, not fixed traits. The underlying capacity is still there. For people who are genuinely low on the hypnotizability spectrum, though, the constraint is built into their brain’s connectivity patterns and is unlikely to change over their lifetime.