Expert Opinions About Hypnosis Have Shifted Over the Years

July 23, 2026 - 00:51

For decades, the debate over what hypnosis actually is has divided psychologists and neuroscientists. Is it a unique trance state that unlocks hidden mental powers, or simply a form of motivated role-playing where people act according to their expectations? The answer, it turns out, has shifted dramatically over the years.

Early theories leaned heavily on the idea of a trance. Pioneers like Franz Mesmer believed in a magnetic fluid, while later researchers described hypnosis as a dissociated state where the conscious mind steps aside. This view dominated popular culture, fueling images of stage hypnotists making people cluck like chickens or forget their own names.

However, by the mid-20th century, a different perspective emerged. Social psychologists like Theodore Sarbin argued that hypnotized subjects are not in a special state at all. Instead, they are highly motivated individuals playing a role. They respond to subtle social cues from the hypnotist and behave according to their own beliefs about what hypnosis should look like. This "non-state" theory gained traction, suggesting that hypnotic phenomena could be explained by ordinary psychological processes like attention, expectation, and compliance.

More recent research has complicated the picture. Brain imaging studies show that during hypnosis, there are measurable changes in brain activity, particularly in areas related to attention and self-awareness. This suggests something real is happening in the brain, not just a performance. Yet, these changes are not uniform across all people. Highly suggestible individuals show distinct neural patterns, while those less suggestible show little change.

Today, most experts reject a simple either-or answer. The consensus leans toward a middle ground: hypnosis is a real psychological phenomenon involving focused attention, reduced peripheral awareness, and heightened suggestibility. It is not a magical trance, but it is also not mere acting. The shift in expert opinion reflects a deeper understanding that the mind and brain are complex, and that what we call hypnosis likely involves a blend of social, cognitive, and neurological factors working together. The debate continues, but the old battle lines have blurred.