On the TV it looks as though the hypnotist has control over the person he is talking to. After all, how else would they get them to eat onions and dance around? But actually they are not.
Firstly, they are usually careful to choose people who are likely to go into trance very easily and ‘test’ the audience before allowing them on stage.
Secondly, the people going on stage usually have a fair amount of natural exhibitionism and while one weekend they may say “I ate an onion because I was hypnotised”, the next weekend they may say “I ate an onion because I had too much to drink”.
But all participants in a stage show could choose to come out of trance any time they wanted to and say ‘thanks all the same, but I’ve already had an onion today”. They don't tend to show those bits though.
While the principles are the same in all hypnosis, hypnotherapy is very different because of the intention behind it. With hypnotherapy the intention is to assist others in making the changes they want for themselves and with appropriate training and understanding, this is done in a safe way with the therapist and client working together.
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