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Personality traits represent consistent patterns in behavior, thoughts, and emotions, reflecting an individual's tendencies across various situations. For example, extraversion, a well-known trait, manifests in individuals as talkative, energetic, and enthusiastic behaviors. These traits are stable over time, offering a reliable framework for predicting how people might act in different contexts. However, they do not define every moment of an individual's life. In contrast to traits,...
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Related Experiment Video

Updated: Jun 12, 2025

Method for Simultaneous fMRI/EEG Data Collection during a Focused Attention Suggestion for Differential Thermal Sensation
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Sleepiness may predict hypnotizability, while personality traits do not.

Juliette Gelebart1, Sophie Schlatter2, Maxime Billot3

  • 1Universite Claude Bernard Lyon 1, Villeurbanne, France.

The American Journal of Clinical Hypnosis
|September 20, 2024
PubMed
Summary
This summary is machine-generated.

Daytime sleepiness correlates with hypnotizability, suggesting it can predict receptiveness to hypnotic suggestions. Personality traits did not influence this relationship, though women showed higher hypnotizability.

Keywords:
Genderhypnotic susceptibilitypersonalitysleepiness

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Area of Science:

  • Psychology
  • Neuroscience
  • Sleep Medicine

Background:

  • Hypnotizability, or receptiveness to hypnotic suggestions, has been controversially linked to sleepiness and personality traits.
  • Previous research presents conflicting findings regarding these associations, necessitating further investigation.

Purpose of the Study:

  • To investigate the relationship between general daytime sleepiness, personality traits, and hypnotizability.
  • To explore potential gender differences in hypnotizability.

Main Methods:

  • Seventy-eight healthy young volunteers completed the Epworth Sleepiness Scale for sleepiness assessment.
  • Personality traits were assessed using the 10-item Big Five Inventory.
  • Hypnotizability was evaluated using the Harvard Group Scale of Hypnotic Susceptibility Form A (HGSHS:A).

Main Results:

  • A significant correlation was found between higher levels of daytime sleepiness and increased hypnotizability.
  • Personality traits, as measured by the Big Five Inventory, did not show a significant influence on hypnotizability.
  • Women demonstrated higher levels of hypnotizability compared to men.

Conclusions:

  • Daytime sleepiness may serve as a predictive indicator for hypnotic suggestion receptiveness.
  • Assessing sleepiness could offer practical insights for optimizing the efficacy of hypnosis interventions.
  • Gender differences in hypnotizability warrant further exploration in clinical and research settings.