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Relationship Between Personality Measures and Perceived Mental Fatigability.

Hannah L Allen1, Theresa Gmelin1, Kyle D Moored1

  • 1Department of Epidemiology, Graduate School of Public Health, 6614University of Pittsburgh, Pittsburgh, PA, USA.

Journal of Aging and Health
|November 25, 2021
PubMed
Summary

Lower conscientiousness and optimism, along with higher goal reengagement, were linked to increased mental fatigability in older men. These personality traits may help identify risks for fatigability later in life.

Keywords:
conscientiousnessfatiguegoal adjustmentoptimism

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Area of Science:

  • Gerontology
  • Psychology
  • Cognitive Science

Background:

  • Perceived mental fatigability is a growing concern in aging populations.
  • Understanding factors influencing mental fatigability is crucial for maintaining quality of life in older adults.

Purpose of the Study:

  • To investigate the association between specific personality traits and perceived mental fatigability in elderly men.
  • To explore if conscientiousness, optimism, goal reengagement, and goal disengagement predict mental fatigability.

Main Methods:

  • Cross-sectional analysis of 1670 men aged 84.3±4.1 years.
  • Used multivariable linear regression to assess personality measures against the Pittsburgh Fatigability Scale (PFS) Mental scores.
  • Adjusted for covariates including age, cognitive function, health status, depressive symptoms, sleep, physical activity, and goal disengagement.

Main Results:

  • Lower conscientiousness (β=-0.91) and optimism (β=-0.63) were independently associated with higher PFS Mental scores (p<.0001).
  • Higher goal reengagement (β=0.51) was also independently linked to greater perceived mental fatigability (p=.01).
  • These associations remained significant after adjusting for multiple covariates.

Conclusions:

  • Reduced conscientiousness and optimism, and increased goal reengagement, are associated with greater perceived mental fatigability in older men.
  • Personality traits may serve as early indicators for fatigability risk in later life.
  • Longitudinal studies are recommended to confirm the causal relationships.