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Area of Science:

  • Psychology
  • Sleep Medicine
  • Network Analysis

Background:

  • Previous research on personality traits and insomnia severity has yielded inconclusive results regarding direct associations.
  • The relationship between personality traits and specific insomnia characteristics remains underexplored.

Purpose of the Study:

  • To investigate the direct and indirect associations between personality traits and overall insomnia severity.
  • To explore how personality traits relate to specific characteristics of insomnia using network analysis.

Main Methods:

  • Employed network analysis on a large sample (N = 2089) to visualize associations.
  • Estimated a network of Five Factor Model personality traits and overall insomnia severity.
  • Estimated a separate network for personality traits and individual Insomnia Severity Index items.

Main Results:

  • Overall insomnia severity showed associations with neuroticism, agreeableness, and openness.
  • Daytime and nocturnal insomnia complaints formed distinct clusters, both linked to sleep dissatisfaction.
  • Neuroticism and conscientiousness demonstrated the most direct associations with specific insomnia complaints.

Conclusions:

  • Network analysis effectively identified direct associations between personality traits and insomnia characteristics.
  • Distinguishing direct from indirect associations offers targets for enhancing Cognitive Behavioral Therapy for insomnia (CBT-I).