Empirical assessment of spiegel's hypnotic induction profile and eye-roll hypothesis

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Abstract
39 healthy male volunteers were hypnotized twice using Spiegel's (1974) Hypnotic Induction Profile (HIP). Their responses were scored independently by 2 raters who alternated roles as hypnotist and observer. Results indicated: (a) high inter-rater reliability for HIP components and for the Hypnotic Induction Score (HIS); (b) satisfactory test-retest correlations for the eye-roll, up gaze, squint, posthypnotic arm levitation, and control differential; (c) component scores and HIS increased from Session 1 to Session 2; (d) the role of the rater was not influential; (e) inter-item correlations on HIP were similar to those reported by Spiegel; and (f) the analysis does not support the hypothesis that the eye-roll is dependably predictive of hypnotic signs measured by HIP subsequent to measurement of the eye-roll.

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