Hypnotic induction: from Braid’s fixation to verbal suggestion

An induction is the opening procedure: what the operator does so that later suggestions can be scored or used. It is a method word, not a proof that a unique brain state has begun.

Key evidence

James Braid’s 1843 Neurypnology; or, The rationale of nervous sleep described prolonged visual fixation and a nervous-sleep account. That book is the English-language break with animal magnetism. See James Braid.

Hippolyte Bernheim’s Suggestive Therapeutics (Herter translation of the second French edition) credits Liébeault for a verbal method of inducing sleep and obtaining therapeutic effects. The Nancy school treated suggestion, including suggestion without deep sleep, as the working idea.

A scale session (Stanford or Harvard group) also begins with a standardised induction so that items can be compared across people. That is a measurement choice. See hypnotic susceptibility.

Limitations

“Induction” in a workshop catalogue can mean almost anything. This page cites two primary methods, not a taxonomy of every rapid or confusion technique.

What we don't know yet

Whether one induction form outperforms another for later clinical outcomes is not settled by 1843 or 1880s clinic notes.

This page is informational only.