Making hypnosis happen: the involuntariness of the hypnotic experience.

The authors tested the hypothesis that hypnotized individuals do not truly experience their responses to suggestions as occurring involuntarily, but instead absorb themselves in imagery that is congruent with the suggestions while avoiding critical thoughts, or even simply comply with suggestions without genuinely experiencing their responses as nonvolitional. Participants were instructed to engage in thoughts and imagery that conflicted with the suggestions given, were urged to pay attention to their behavior, and were questioned regarding the perceived involuntariness of their responses. Simultaneously, electrodermal skin conductance responses provided a measure of the truthfulness of their reports. It was found that responses to all hypnotic suggestions were reported as being involuntary, in spite of the conflicting imagery and increased saliency, and that these reports were truthful. These findings provide disconfirming evidence for the sociocognitive theories of hypnosis.