First posted Jan 15, 2015:
Hypnosis inductions can generally fall into three categories: Instant, Rapid and Progressive.
Instant inductions (sometimes called shock inductions) are very quick. Here is a video of me demonstrating a standing instant induction http://youtu.be/gWPBrV20oGU
but instant inductions can also be done seated. These inductions are often used by stage hypnotists. I use the standing induction when giving public demonstrations of hypnosis and also when demonstrating hypnosis to my students in my training school. The seated instant induction (I generally use the hand drop induction) lends itself better to the therapy session, and particularly to clients who a) have been hypnotised before or b) for whom a long induction is considered inappropriate.
Whereas Instant Inductions take just a few moments to do, Rapid Inductions may take a few minutes. My favourite of these is the Elman Induction, and you can see me doing a demonstration at http://youtu.be/aAJuPyUvHn8 I use the Elman Induction with the majority of my therapy clients. The instant induction is very authoritarian whereas the Elman Induction is more gentle. And the great thing about doing the Elman Induction is that it has tests built into it so you can check if your client is responsive!
Progressive inductions tend to be much slower than the rapid and instant inductions. They may involve asking the client to relax the muscles of their bodies from their head to their toes. Or perhaps include a guided visualisation. They are generally very permissive in nature and so may produce less resistance. However because they are slow, some clients may feel bored or restless by them.
Some people will respond better to one induction than another. All these inductions are taught on our hypnotherapy training courses.