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Imagery vividness before and during the PCI-HAP: a partial replication.

Ronald J Pekala¹, Ronald L Maurer

¹a Coatesville Veterans Administration Medical Center , Pennsylvania , USA.

The International Journal of Clinical and Experimental Hypnosis

|November 4, 2014

Summary

This study replicated previous findings on hypnotism, showing that imagery vividness and trance state effects predict hypnotic suggestibility. However, the predictive power was less than in the original study.

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Area of Science:

Psychology
Cognitive Science
Neuroscience

Background:

Previous research indicated a strong link between pre-hypnotic imagery vividness, trance state effects, and hypnotic suggestibility.
The original study suggested that imagery vividness during hypnotism was predicted by combined pre-hypnotic imagery vividness and trance state effects.

Purpose of the Study:

To replicate an earlier study on the predictors of hypnotic suggestibility.
To assess the relationship between imagery vividness (before and during hypnosis) and trance state effects.
To investigate the predictive power of these factors on hypnotic imagoic suggestibility in a larger sample.

Main Methods:

A larger sample size was used compared to the original study.
A similar phenomenological hypnotic assessment procedure was employed.
Correlational and regression analyses were conducted to examine the relationships between variables.

Main Results:

Trance state effects and pre-hypnotic imagery vividness remained significant predictors of hypnotic imagoic suggestibility.
The variance accounted for by these predictors was notably lower in the current study compared to the original.
This suggests a potential moderating effect of methodology or sample characteristics.

Conclusions:

While the predictive relationship between imagery vividness, trance state, and hypnotic suggestibility persists, its strength may be influenced by methodological factors.
Further research is needed to elucidate the precise mechanisms and contributing factors influencing hypnotic suggestibility.
The findings highlight the complexity of hypnotic phenomena and the need for careful consideration of experimental design.