With the intention of "saturating the cognitive microenvironment of the mind", Coué's therapeutic method approach was based on four non-controversial principles: Charles Baudouin's "laws of suggestion" are:[5] Modern scientific study of hypnosis, which follows the pattern of Hull's work, separates two essential factors: "trance" and suggestion.
Once a subject enters hypnosis, the hypnotist gives suggestions that can produce sought effects.
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.
Experiments on suggestion, in the absence of hypnosis, were conducted by early researchers such as Hull (1933).
[9] 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.