II.

Characteristics

Hypnosis results in the gradual assumption by the subject of a state of consciousness wholly dissimilar to either wakefulness or sleep, during which attention is withdrawn from the outside world and is concentrated on mental, sensory, and physiological experiences. When a hypnotist induces a trance, a close relationship or rapport develops between operator and subject. The responses of subjects in the trance state, and the phenomena or behaviour they manifest objectively, are the product of their motivational set; that is, behaviour reflects what is being sought from the experience.

Most people can be easily hypnotized. The depth of trance, however, will vary from a light state close to waking, to a profound state of somnambulism. A profound trance is characterized by a forgetting of trance events and by an ability to respond automatically to posthypnotic suggestions that are not overly anxiety-provoking. The depth of trance achievable is a relatively fixed characteristic, dependent on the emotional condition of the subject and on the skill of the hypnotist. Only 20 per cent of subjects are capable of entering somnambulistic states through the usual methods of induction. Medically, this percentage is not significant, since therapeutic effects occur even in a light trance.

Hypnosis can produce a deeper contact with one's emotional life, resulting in some lifting of repressions and exposure of buried fears and conflicts. This effect potentially lends itself to medical and educational use, but it also lends itself to misinterpretation. Thus, the revival through hypnosis of early, forgotten memories may be fused with fantasies. Research into hypnotically induced memories in recent years has in fact stressed their uncertain reliability.