A multivariate approach to the prediction of hypnotic susceptibility

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Abstract
The present study examined the relation between various self-report measures and two measures of hypnotizability within a multivariate framework. A group of 748 participants was tested on the Harvard Group Scale of Hypnotic Susceptibility, Form A (HGSHSA), the Tellegen Absorption Scale (TAS), as well as the Preference for an Imagic Cognitive Style (PICS) questionnaire. One hundred ninety of these participants also completed the Paranormal Experiences Questionnaire (PEQ). Data were analyzed usinghierarchical multiple regresion equations, and the results of the analyses indicated that both the TAS and PIC3 accounted for sigruficant amounts of unique variance in each of two 373-member samples of HGSHSA scores. A further subsample of participants (n = 161) was tested on the Stanford Hypnotic Susceptibility Scale, Form C (SHSSC) to see if these results would generalize to another measure of hypnotizability. Hierarchical multiple regression analyses revealed that although the PEQ predicted significant amounts of unique SHSSC variance over and above that predicted by the TAS, the PICS failed to do so. This inconsistency in results may be due in part to the generally low intercomlation between the different hypnotizability scales and points to the need to develop new predictor variables that are orthogonal to each other.

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