Types of hypnotically (un)susceptible individuals as a function of phenomenological experience: towards a typology of hypnotic types.

Subjects were 194 nursing students who experienced the HGSHS A (Shor & Orne, 1962) in which was embedded a 2-minute sitting quietly interval subsequent to the eye catalepsy item, but prior to the "counting out" sequence. After the HGSHS:A, subjects completed the Phenomenology of Consciousness Inventory (PCI) (Pekala, 1982, 1991c) in reference to the sitting quietly interval embedded in the hypnotic induction ceremony. Subjects were divided into low and high susceptible groups. K-means cluster analysis of the subjects' responses to the PCI revealed nine different cluster groups. These groups had different patterns of phenomenological experiences that cut across individual subjects' actual HGSHS:A scores. Implications of the above for (a) working with clients who may not score that high on standard behavioral measures of hypnotizability (such as the HGSHS:A), or (b) understanding how hypnosis "works," are discussed.