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Clarifying the relationship between alexithymia and subjective interoception.

Giulia Gaggero1, Andrea Bizzego1, Sara Dellantonio1

  • 1Department of Psychology and Cognitive Sciences, University of Trento, Rovereto, Italy.

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|December 13, 2021
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Summary
This summary is machine-generated.

Alexithymia, a condition of altered emotional awareness, is linked to interoception deficits, particularly in identifying and describing feelings. These findings support interoceptive deficits as a core aspect of alexithymia.

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Area of Science:

  • Psychology
  • Neuroscience
  • Emotional Awareness

Background:

  • The hypothesis linking emotions to bodily states is gaining attention.
  • Alexithymia, characterized by difficulties in emotional awareness, is proposed to stem from interoception deficits.
  • Previous research yielded inconsistent results due to varied assessment methods.

Purpose of the Study:

  • To investigate the relationship between alexithymia and interoception.
  • To clarify whether interoception deficits are a core component of alexithymia.

Main Methods:

  • Administered self-report questionnaires on interoception and alexithymia.
  • Utilized correlation and machine learning analyses.
  • Collected data from three international samples (Italy, U.S., Singapore; N = 814).

Main Results:

  • Alexithymia correlated with deficits in subjective interoceptive accuracy and attention.
  • Interoceptive deficits in alexithymia were mainly linked to difficulties in identifying and describing emotions.
  • A weaker association was found with externally-oriented thinking (TAS-20), and no association with the affective dimension (BVAQ).

Conclusions:

  • Interoceptive deficits are a core component of alexithymia.
  • Alexithymia cannot be fully reduced to interoceptive deficits alone.
  • Theoretical and psychometric differences between alexithymia measures warrant further investigation.