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Is Healthy Neuroticism Associated with Longevity? A Coordinated Integrative Data Analysis.

Nicholas A Turiano1, Eileen K Graham2, Sara J Weston3

  • 1West Virginia University, Department of Psychology and the West Virginia Prevention Research Center, Morgantown, WV, USA.

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Summary

This study found that while conscientiousness protects against mortality, neuroticism’s effect on longevity is inconsistent. No evidence supported a protective interaction between high neuroticism and high conscientiousness for health outcomes.

Keywords:
Big FiveIALSAconscientiousnesscoordinated IDAhealthy neuroticismmortality

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Area of Science:

  • Psychology
  • Health Sciences
  • Longevity Research

Background:

  • Individual differences in personality traits, particularly the Big Five, are linked to health and longevity.
  • Conscientiousness consistently predicts better health outcomes, but findings for neuroticism are mixed, showing varied associations with mortality risk.

Purpose of the Study:

  • To investigate whether the interaction between neuroticism and conscientiousness predicts mortality.
  • To test the hypothesis that high neuroticism is a risk factor for mortality only when conscientiousness is low, exploring the concept of "healthy neuroticism".

Main Methods:

  • An integrative data analysis combining data from 12 independent cohort studies.
  • A pre-registered analysis involving a large sample size (N = 44,702) to examine personality trait interactions and mortality prediction.

Main Results:

  • Higher conscientiousness was consistently associated with a reduced hazard of dying.
  • Neuroticism did not show a consistent predictive pattern for mortality across the studies.
  • No statistical evidence was found for a significant interaction between neuroticism and conscientiousness in predicting mortality.

Conclusions:

  • The findings do not support the hypothesis that a combination of high neuroticism and high conscientiousness is protective for longevity.
  • Further research is needed to identify factors that may buffer the negative health effects of high neuroticism and to explore the "healthy neuroticism" construct.