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Surveying Low-Cost Methods to Measure Lifespan and Healthspan in Caenorhabditis elegans

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Do conscientious individuals live longer? A quantitative review.

Margaret L Kern¹, Howard S Friedman

¹Department of Psychology, University of California, Riverside, CA 82521-0426, USA. margaret.kern@email.ucr.edu

Health Psychology : Official Journal of the Division of Health Psychology, American Psychological Association

|October 1, 2008

Summary

This summary is machine-generated.

Higher conscientiousness traits are linked to a longer lifespan. This meta-analysis of 20 studies found a significant positive association between conscientiousness and longevity, particularly achievement and order facets.

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Area of Science:

Psychology
Longevity research
Health psychology

Background:

Growing evidence suggests conscientiousness traits offer health protection.
Understanding the link between personality and lifespan is crucial for public health.

Purpose of the Study:

To conduct a meta-analysis on the association between conscientiousness-related traits and longevity.
To synthesize findings from multiple studies to determine the strength of this relationship.

Main Methods:

A random-effects model was used to combine data from 20 independent samples.
Effect sizes were calculated as correlation coefficients (r) for conscientiousness and mortality risk.
Fixed-effects analyses examined specific conscientiousness facets and study moderators.

Main Results:

Higher conscientiousness was significantly and positively associated with longevity (r = .11).
The strongest associations were observed for the achievement (persistent, industrious) and order (organized, disciplined) facets.
The 95% confidence interval for the association was .05–.17.

Conclusions:

Conscientiousness-related traits are important for health across the lifespan.
Future research should explore how conscientiousness influences and is influenced by health events over time.
Interventions could leverage conscientiousness to promote long-term health.