The depth of hypnosis.

Abstract
A scale for measuring hypnotic depth consisting of four subtests of five units each was arbitrarily assembled from earlier scales. A standard method of trance induction was used on 57 volunteer men and women subjects. It was found that while the earlier scales are individually inadequate, they supplement each other when taken in combination. The new scale reveals a distribution of hypnotizability in which frequencies fall as scores rise. Retest hypnotic scores correlated with first-trial scores about .80, whether the hypnotist be the same individual in both trials or not. Slight but consistent sex differences in favor of women were shown with all scores. Correlation of hypnotic test scores of the subjects with their scores on several personality questionnaire variables revealed only "amiability" as possibly significant. Negative findings were reported for "self-sufficiency," "extraversion," "dominance," and "intelligence." (PsycINFO Database Record (c) 2006 APA, all rights reserved)