The Relationship between the Hypnotic Induction Profile and the Stanford Hypnotic Susceptibility Scale, Form C: A Replication

Abstract

For the past 10 years, the only measure of hypnotizability appropriate for clinical settings has been the Hypnotic Induction Profile (HIP). The advantages of using the HIP stem from its brevity of administration, its standardization on a patient population, and its proven utility in predicting treatment outcome. In order to bridge the gap between studies done in laboratory settings, the HIP was compared with laboratory measures of hypnotizability. Previous investigations reported a “moderate” relationship between the HIP and the Stanford Hypnotic Susceptibility Scales (SHSS). The present investigation examined the relationship between the HIP and the SHSS, Form C. Sixty-three student volunteers served as subjects. Both measures were individually administered to each subject, in a counterbalanced order by two qualified examiners. Each examiner was unaware of the subject's score on the other hypnotizability measure. After the administration of each test, each subject rated how hypnotized he/she felt on an eleven point scale. The results showed that the induction score of the HIP correlated r (61) = .63, p < .001 with SHSS: Form C. Subject's self-ratings of hypnotizability were also found to be significantly related with the HIP and SHSS: Form C. No significant effects were found between the administration order of each scale. These findings suggest that a stronger relationship exists between the HIP and SHSS than was previously reported. The implications of such findings are discussed.