Suggestion

Charles Baudouin

Charles Baudouin's "laws of suggestion" are:

The Law of Concentrated Attention

If spontaneous attention is concentrated on an idea, this tends to become realized.

The Law of Auxiliary Emotion, also called the Law of dominant effect

When a suggestion is supported by emotion it will become stronger than every other suggestion, given at the same moment.

The Law of Reversed Effort

If conscious will is in conflict with the imagination, the imagination will win.

The Law of Subconscious Teleology

When the goal has been traced out the unconscious will find out how to reach it. To be realized an idea must be unconsciously processed and accepted. The mechanism is the same as in motivation.

Hypnosis

Trance and suggestion

Modern scientific study of hypnosis, which follows the pattern of Hull's work, separates two essential factors: "trance" and suggestion. The state of mind induced by "trance" is said to come about via the process of a hypnotic induction—essentially instructing and suggesting to the subject that they will enter a hypnotic state. Once a subject enters hypnosis, the hypnotist gives suggestions that can produce sought effects. Commonly used suggestions on measures of "suggestibility" or "susceptibility" (or for those with a different theoretical orientation, "hypnotic talent") include suggestions that one's arm is getting lighter and floating up in the air, or that a fly is buzzing around one's head. The "classic" response to an accepted suggestion that one's arm is beginning to float in the air is that the subject perceives the intended effect as happening involuntarily.

Scientific hypnotism

Consistent with the views of Pierre Janet—who noted (1920, pp.284–285) that the critical feature is not the making of a 'suggestion', but, instead, is the taking of the 'suggestion'—Weitzenhoffer (2000, passim), argued that scientific hypnotism centres on the delivery of "suggestions" to hypnotized subjects; and, according to Yeates (2016b, p.35), these suggestions are delivered with the intention of eliciting:

1. the further stimulation of partially active mental states and/or physiological processes;
2. the awakening of dormant mental states and/or physiological processes;
3. the activation of latent mental states and/or physiological processes;
4. alterations in existing perceptions, thoughts, feelings, and/or behaviours; and/or
5. entirely new perceptions, thoughts, feelings, and/or behaviours.

Temporal dimensions

Furthermore, according to Yeates (2016b, pp.35–36), 'suggestions' have four temporal dimensions:

1. pre-hypnotic suggestions, delivered prior to the formal induction;
2. suggestions for within-hypnotic influence, to elicit specific within-session outcomes;
3. suggestions for post-hypnotic influence, to elicit specific post-session outcomes:
   1. immediate influence ("and, on leaving here today, you'll…");
   2. shorter-term influence ("and, each time you're…");
   3. longer-term influence ("and, as time passes, you'll increasingly…"); or
   4. specific-moment influence (Bernheim's suggestions à longue échéance, 'suggestions to be realised after a long interval'), which are (i) intended "to produce a particular effect at a designated later hour", (ii) have "no influence before the appointed hour", (iii) nor "after it had expired" (Barrows, 1896, pp.22–23), or
4. post-hypnotic suggestions, delivered to dehypnotised-but-not-yet-completely-reoriented subjects.

Waking suggestion

Suggestions, however, can also have an effect in the absence of a hypnosis. These so-called "waking suggestions" are given in precisely the same way as "hypnotic suggestions" (i.e., suggestions given within hypnosis) and can produce strong changes in perceptual experience. Experiments on suggestion, in the absence of hypnosis, were conducted by early researchers such as Hull (1933). More recently, researchers such as Nicholas Spanos and Irving Kirsch have conducted experiments investigating such non-hypnotic-suggestibility and found a strong correlation between people's responses to suggestion both in- and outside hypnosis.

Other forms

In addition to the kinds of suggestion typically delivered by researchers interested in hypnosis there are other forms of suggestibility, though not all are considered interrelated. These include: primary and secondary suggestibility (older terms for non-hypnotic and hypnotic suggestibility respectively), hypnotic suggestibility (i.e., the response to suggestion measured within hypnosis), and interrogative suggestibility (yielding to interrogative questions, and shifting responses when interrogative pressure is applied: see Gudjonsson Suggestibility Scale. Metaphors and imagery can also be used to deliver suggestion.