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Disentangling interoceptive abilities in alexithymia.

Cristina Scarpazza1, Andrea Zangrossi2,3, Yu-Chun Huang4,5

  • 1Department of General Psychology, University of Padua, Via Venezia 8, 35131, Padua, PD, Italy. cristina.scarpazza@unipd.it.

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Summary
This summary is machine-generated.

Individuals with alexithymia show increased interoceptive accuracy and sensibility but decreased interoceptive awareness. This dissociation, particularly lower awareness, accurately predicts alexithymia, offering insights into emotional processing and psychosomatic disorders.

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Area of Science:

  • Psychology
  • Neuroscience
  • Psychophysiology

Background:

  • Interoceptive abilities (sensibility, accuracy, awareness) are linked to emotional experience.
  • Alexithymia, difficulty interpreting emotional arousal, impacts emotional experience.
  • Interoceptive abilities in alexithymia are under-investigated, with conflicting theories.

Purpose of the Study:

  • To investigate the relationship between alexithymia and the three dimensions of interoception.
  • To clarify the role of interoceptive awareness in alexithymia.

Main Methods:

  • Study included 182 participants.
  • Assessed levels of alexithymia and three interoceptive dimensions.
  • Utilized regression analyses and ROC analysis.

Main Results:

  • Higher alexithymia correlated with higher interoceptive accuracy (R²=0.29) and sensibility (R²=0.14).
  • Higher alexithymia correlated with lower interoceptive awareness (R²=0.36).
  • Interoceptive awareness was the most accurate predictor of alexithymia (>92% accuracy).

Conclusions:

  • Results support a dissociation between interoceptive accuracy and awareness in alexithymia.
  • This dissociation may explain alexithymia's psycho-physiological mechanisms.
  • Findings suggest potential neurocognitive mechanisms for psychosomatic disorders in alexithymia.