Behavioral and subjective scoring of the Harvard Group Scale of Hypnotic Susceptibility: further data and an extension.
V K Kumar, G Marcano, Ronald J Pekala
American Journal of Clinical Hypnosis January 1996 DOI: 10.1080/00029157.1996.10403337 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Replication and extension study Peer reviewed |
|---|---|
| Measures | Harvard Group Scale of Hypnotic Susceptibility, Dissociative Experience Scale (DES), Phenomenology of Consciousness Inventory (PCI) |
| Key points | The subjective counterpart of the Harvard Group Scale showed high reliability (coefficient .90) and concurrent validity (r = .84) with the standard behavioral score, and both scales correlated similarly with the Dissociative Experience Scale and Phenomenology of Consciousness Inventory. Using the two scales together did not yield a more stringent measure of hypnotizability on those variables than either scale alone. |
Abstract
The present study replicated and extended Kirsch, Council, and Wickless's work evaluating the reliability and concurrent validity of a subjective response scale developed for the Harvard Group Scale of Hypnotic Susceptibility. Consistent with Kirsch et al.'s findings, the subjective counterpart of the Harvard scale demonstrated high reliability (coefficient .90) and concurrent validity (r = .84 with Harvard's standard behavioral score). Similar correlations of the behavioral and subjective scales with the Dissociative Experience Scale (DES) and Phenomenology of Consciousness Inventory (PCI) suggested that the two hypnotizability scales are measuring similar constructs. However, using the two scales in combination did not yield a morestringent measure of hypnotizability in terms of DES and PCI variables than using either of them alone.