Subjects undergoing hypnotic induction procedures frequently report a sense of their behaviour as being under their normal control. Weitzenhoffer (1978) discussed this as a feature of the 'classic suggestion effect' that is a characteristic of hypnosis. This suggestion effect has two component criteria: (a) that there must be a response to a suggestion; (b) that the response must be experienced as avolitional.
Relaxation, paralysis, automatic movements and rigid catalepsy may all be experienced as avolitional changes in response to hypnotic suggestion. Enhanced muscle performance may also be reported, but this may be due to reduced perception of muscle fatigue, rather than to actual improved performance.
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