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The Relationship Between Personality Traits and Well-Being via Brain Functional Connectivity

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Abstract

Different single personality traits have been found to be closely related to well-being, and single personality traits and well-being shared multiple neural substrates. Yet little is known about how the multi-trait profile, which better reflects individual differences in terms of taxonomy, is related to multi-faceted well-being, and whether the spontaneous brain activities of their common neural substrates can partially explain this relationship. To advance our understanding, we examined the relationships among personality traits, well-being, and brain functional connectivity generated in resting-state functional MRI among 729 healthy participants. We first identified a linear combination of personal traits (i.e., higher extraversion, conscientiousness, and agreeableness, but lower neuroticism) that was most relevant to a set of well-being indicators (i.e., positive affect, life satisfaction, and meaning of purpose) by considering their canonical correlational relation. Next, by using the network-based statistic method, we identified the sub-network associated with the well-being canonical variate. The subnetwork was formed by functional connectivity within and between multiple brain networks spanning from primary sensory networks to high-order networks. Moreover, the mediation analyses showed that the relationship between personality trait variate and well-being variate was explained by higher positive functional connectivity and higher global network efficiency within the identified sub-network. These findings suggest that effective functional communication within and between multiple brain networks can be a potentially important mechanism for promoting better well-being.

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Data Availability

The HCP dataset used in this study is publicly available in the database of Human Connectome Project (Van Essen et al., 2013): https://db.humanconnectome.org/data/projects/HCP_1200.

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Acknowledgements

We would like to thank Dr. Jinbo Zhang for his valuable suggestions on the visualization of results.

Funding

This work was supported by the National Natural Science Foundation of China (NSFC) (No. 81601559, 71701219), and Guangdong Basic and Applied Basic Research Foundation (No. 2022A1515012005).

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Correspondence to Zhengjia Dai.

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All the authors declare that they have no conflict of interest.

Ethical Approval

The HCP project was approved by the Institutional Review Board of Washington University in St. Louis.

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All the participants in this study signed informed consent before the data collection.

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Li, L., Li, L.M.W., Ma, J. et al. The Relationship Between Personality Traits and Well-Being via Brain Functional Connectivity. J Happiness Stud 24, 2127–2152 (2023). https://doi.org/10.1007/s10902-023-00674-y

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  • DOI: https://doi.org/10.1007/s10902-023-00674-y

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