Expert judgments of hypnosis from subjective state reports

Area of Science:

• Psychology
• Cognitive Science
• Neuroscience

Background:

• Suggestibility is a key factor in hypnotic responsiveness.
• Understanding the subjective experience of hypnosis is crucial for differentiating it from other altered states of consciousness.

Purpose of the Study:

• To compare suggestibility across different induction methods: traditional hypnosis, alert induction, progressive relaxation, and goal-directed imagery.
• To evaluate whether hypnotic inductions create a unique state of consciousness.
• To determine the relationship between suggestibility and the assessed state of consciousness.

Main Methods:

• 60 college students were assigned to one of four conditions: traditional hypnotic induction, alert induction, progressive relaxation training, or goal-directed imagery.
• Subjects' responsiveness to suggestion was measured.
• Open-ended reports of awareness states and experiences of hypnotic suggestions were collected.
• Reports from 24 participants were rated by 18 hypnosis experts.

Main Results:

• No significant differences in suggestibility were found between the four groups.
• Expert raters could not distinguish between the state of consciousness induced by traditional hypnosis and non-hypnotic relaxation training.
• The subjective experience of hypnotic suggestions following imagination training was indistinguishable from that following hypnotic inductions.
• Suggestibility was found to be unrelated to the state of consciousness as evaluated by experts.

Conclusions:

• Traditional hypnotic inductions do not appear to produce a unique state of consciousness distinct from non-hypnotic relaxation.
• The subjective experience of undergoing suggestions is similar whether induced by hypnosis or imagination training.
• Suggestibility is not dependent on the specific state of consciousness achieved through these methods.