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Intrusive Thoughts Mediate the Association between Neuroticism and Cognitive Function.

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Trait neuroticism negatively impacts cognition. Intrusive thoughts, reflecting poor attentional control, mediate this relationship, offering a key mechanism linking neuroticism to cognitive performance deficits.

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Area of Science:

  • Psychology
  • Cognitive Neuroscience

Background:

  • Research links higher neuroticism to poorer cognitive function.
  • Mechanisms underlying this association, particularly the role of intrusive thoughts and negative affect, remain unclear.

Purpose of the Study:

  • To investigate intrusive thoughts and negative affect as mediators between trait neuroticism and cognitive performance.
  • To test the hypothesis that intrusive thoughts, indicative of attentional control deficits, explain the neuroticism-cognition link.

Main Methods:

  • 317 adults (mean age 49.43) completed cognitive tasks and self-report measures.
  • Measures assessed trait neuroticism, negative affect, intrusive thoughts, and cognitive performance.

Main Results:

  • Intrusive thoughts significantly mediated the relationship between neuroticism and cognitive performance.
  • This mediation effect persisted even after accounting for the influence of negative affect.

Conclusions:

  • The tendency to experience intrusive thoughts is a key mechanism linking trait neuroticism to impaired cognitive performance.
  • Ineffective attentional control, as reflected by intrusive thoughts, may underlie cognitive deficits associated with neuroticism.