In stage hypnosis, a hypnotist carefully chooses volunteers from the audience, puts them into a trance using hypnosis and then plants suggestions for them to perform. The critical factor in all stage hypnosis shows is the choice of enthusiastic and credulous individuals. Various techniques exist for discerning whether an individual is a likely candidate for a hypnosis stage act. Often, the sheer willingness of audience members to volunteer is a sign that they will "go along with" the hypnotist's suggestions during the show, whether or not they ever really become hypnotised in the first place.
For example, the volunteers may be made to believe they are drunk, aliens speaking a strange alien language, naked or seeing others naked, 6-year-old children, ballet dancers etc. Such suggestions are designed to be temporary, lasting the duration of the show. Stage hypnosis is a unique performance in that it involves "real" people from the audience responding in a variety of ways, making no two shows the same. There has been debate over the years as to whether some degree of fraud or collusion may be involved in some stage hypnosis acts.



