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"How deeply hypnotized did i get?" Predicting self-reported hypnotic depth from a phenomenological assessment
Ronald J Pekala1, V K Kumar, Ronald Maurer
1Coatesville Veterans Administration Medical Center, Coatesville, Pennsylvania, USA. Ronald.Pekala@med.va.gov
Summary
This study found that vivid imagery during hypnosis and the perception of being in a hypnoidal state are key predictors of self-reported hypnotic depth. These factors explain much of the variance in how deep individuals feel their hypnosis is.
Area of Science:
- Psychology
- Neuroscience
- Cognitive Science
Background:
- Estimating hypnotic depth has been a focus for over 70 years.
- Understanding the factors influencing subjective hypnotic depth is crucial for clinical and research applications.
Purpose of the Study:
- To predict self-reported hypnotic depth using phenomenological and behavioral variables.
- To identify key predictors of hypnotic depth from the Phenomenology of Consciousness Inventory-Hypnotic Assessment Procedure (PCI-HAP).
Main Methods:
- Utilized the PCI-HAP to gather phenomenological and behavioral data.
- Employed regression analysis to generate predictive equations.
- Cross-validated findings using a separate participant group.
Main Results:
- Imagery vividness during hypnosis (imagoic suggestibility) significantly predicted self-reported hypnotic depth.
- The PCI pHGS measure, indicating a hypnoidal state, also strongly predicted self-reported hypnotic depth.
- These two variables accounted for the majority of the variance in perceived hypnotic depth.
Conclusions:
- Self-reported hypnotic depth is influenced by subjective experiences, particularly imagery vividness.
- Perception of responsiveness to suggestions plays a critical role in assessing hypnotic depth.
- Findings support the interaction hypothesis of suggestibility and altered-state effects in hypnosis.