The Multilayer Network Approach in the Study of Personality Neuroscience

It has long been understood that a multitude of biological systems, from genetics, to brain networks, to psychological factors, all play a role in personality. Understanding how these systems interact with each other to form both relatively stable patterns of behaviour, cognition and emotion, but al...

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Main Authors: Dora Brooks, Hanneke E. Hulst, Leon de Bruin, Gerrit Glas, Jeroen J. G. Geurts, Linda Douw
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Brain Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3425/10/12/915
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author Dora Brooks
Hanneke E. Hulst
Leon de Bruin
Gerrit Glas
Jeroen J. G. Geurts
Linda Douw
author_facet Dora Brooks
Hanneke E. Hulst
Leon de Bruin
Gerrit Glas
Jeroen J. G. Geurts
Linda Douw
author_sort Dora Brooks
collection DOAJ
description It has long been understood that a multitude of biological systems, from genetics, to brain networks, to psychological factors, all play a role in personality. Understanding how these systems interact with each other to form both relatively stable patterns of behaviour, cognition and emotion, but also vast individual differences and psychiatric disorders, however, requires new methodological insight. This article explores a way in which to integrate multiple levels of personality simultaneously, with particular focus on its neural and psychological constituents. It does so first by reviewing the current methodology of studies used to relate the two levels, where psychological traits, often defined with a latent variable model are used as higher-level concepts to identify the neural correlates of personality (NCPs). This is known as a top-down approach, which though useful in revealing correlations, is not able to include the fine-grained interactions that occur at both levels. As an alternative, we discuss the use of a novel complex system approach known as a multilayer network, a technique that has recently proved successful in revealing veracious interactions between networks at more than one level. The benefits of the multilayer approach to the study of personality neuroscience follow from its well-founded theoretical basis in network science. Its predictive and descriptive power may surpass that of statistical top-down and latent variable models alone, potentially allowing the discernment of more complete descriptions of individual differences, and psychiatric and neurological changes that accompany disease. Though in its infancy, and subject to a number of methodological unknowns, we argue that the multilayer network approach may contribute to an understanding of personality as a complex system comprised of interrelated psychological and neural features.
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spelling doaj.art-25d338f7bbff4f80a395ac5fbcfe030f2023-11-20T22:33:28ZengMDPI AGBrain Sciences2076-34252020-11-01101291510.3390/brainsci10120915The Multilayer Network Approach in the Study of Personality NeuroscienceDora Brooks0Hanneke E. Hulst1Leon de Bruin2Gerrit Glas3Jeroen J. G. Geurts4Linda Douw5Department of Anatomy and Neurosciences, Amsterdam University Medical Centres, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, 1081 HZ Amsterdam, The NetherlandsDepartment of Anatomy and Neurosciences, Amsterdam University Medical Centres, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, 1081 HZ Amsterdam, The NetherlandsDepartment of Philosophy, VU University, 1081 HV Amsterdam, The NetherlandsDepartment of Philosophy, VU University, 1081 HV Amsterdam, The NetherlandsDepartment of Anatomy and Neurosciences, Amsterdam University Medical Centres, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, 1081 HZ Amsterdam, The NetherlandsDepartment of Anatomy and Neurosciences, Amsterdam University Medical Centres, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, 1081 HZ Amsterdam, The NetherlandsIt has long been understood that a multitude of biological systems, from genetics, to brain networks, to psychological factors, all play a role in personality. Understanding how these systems interact with each other to form both relatively stable patterns of behaviour, cognition and emotion, but also vast individual differences and psychiatric disorders, however, requires new methodological insight. This article explores a way in which to integrate multiple levels of personality simultaneously, with particular focus on its neural and psychological constituents. It does so first by reviewing the current methodology of studies used to relate the two levels, where psychological traits, often defined with a latent variable model are used as higher-level concepts to identify the neural correlates of personality (NCPs). This is known as a top-down approach, which though useful in revealing correlations, is not able to include the fine-grained interactions that occur at both levels. As an alternative, we discuss the use of a novel complex system approach known as a multilayer network, a technique that has recently proved successful in revealing veracious interactions between networks at more than one level. The benefits of the multilayer approach to the study of personality neuroscience follow from its well-founded theoretical basis in network science. Its predictive and descriptive power may surpass that of statistical top-down and latent variable models alone, potentially allowing the discernment of more complete descriptions of individual differences, and psychiatric and neurological changes that accompany disease. Though in its infancy, and subject to a number of methodological unknowns, we argue that the multilayer network approach may contribute to an understanding of personality as a complex system comprised of interrelated psychological and neural features.https://www.mdpi.com/2076-3425/10/12/915personality neuroscienceindividual differencesnetwork neurosciencemultilayer networkfive-factor modelsymptom network
spellingShingle Dora Brooks
Hanneke E. Hulst
Leon de Bruin
Gerrit Glas
Jeroen J. G. Geurts
Linda Douw
The Multilayer Network Approach in the Study of Personality Neuroscience
Brain Sciences
personality neuroscience
individual differences
network neuroscience
multilayer network
five-factor model
symptom network
title The Multilayer Network Approach in the Study of Personality Neuroscience
title_full The Multilayer Network Approach in the Study of Personality Neuroscience
title_fullStr The Multilayer Network Approach in the Study of Personality Neuroscience
title_full_unstemmed The Multilayer Network Approach in the Study of Personality Neuroscience
title_short The Multilayer Network Approach in the Study of Personality Neuroscience
title_sort multilayer network approach in the study of personality neuroscience
topic personality neuroscience
individual differences
network neuroscience
multilayer network
five-factor model
symptom network
url https://www.mdpi.com/2076-3425/10/12/915
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