Beyond social withdrawal: New perspectives on the effects of inflammation on social behavior

Decades of research in animals and humans show that inflammation is an important regulator of social behavior. While much research in this area has concluded that inflammation causes a withdrawal from social interaction, closer examination of the literature reveals that the effects of inflammation o...

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Main Authors: Keely A. Muscatell, Tristen K. Inagaki
Format: Article
Language:English
Published: Elsevier 2021-10-01
Series:Brain, Behavior, & Immunity - Health
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666354621001058
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author Keely A. Muscatell
Tristen K. Inagaki
author_facet Keely A. Muscatell
Tristen K. Inagaki
author_sort Keely A. Muscatell
collection DOAJ
description Decades of research in animals and humans show that inflammation is an important regulator of social behavior. While much research in this area has concluded that inflammation causes a withdrawal from social interaction, closer examination of the literature reveals that the effects of inflammation on social behavior are much more nuanced. Indeed, while many studies do show that increases in inflammation lead to social withdrawal, other studies show the exact opposite, finding that inflammation leads to an increase in social approach behavior. Critically, whether an organism withdraws or approaches when inflamed may depend on the whether the target of the behavior is a close other or a stranger. In the present paper, we review both animal research and our initial research in humans that has utilized experimental manipulations of inflammation and examined their effects on social approach behavior. We argue, based on complementary theoretical perspectives and supporting evidence from the literature, that there are three critical next steps for translational work examining the effects of inflammation on social behavior: (1) We need to study actual social behavior, as expressed toward both close others and strangers; (2) We should examine not just the social behavior of the inflamed individual, but also the behavior of others interacting with an inflamed individual; and (3) We must consider the relative increases in inflammation (i.e., higher vs. lower) as a contributor to social withdrawal vs. approach. Ultimately, we urge the field to move beyond a singular focus on inflammation and social withdrawal so that we can develop a more comprehensive understanding of the effects of inflammation on a variety of social behaviors.
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spelling doaj.art-8df27cfd70334d5e8afe6c2020082b572022-12-21T21:46:07ZengElsevierBrain, Behavior, & Immunity - Health2666-35462021-10-0116100302Beyond social withdrawal: New perspectives on the effects of inflammation on social behaviorKeely A. Muscatell0Tristen K. Inagaki1Department of Psychology & Neuroscience, University of North Carolina at Chapel Hill, USA; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, USA; Carolina Population Center, University of North Carolina at Chapel Hill, USA; Corresponding author. UNC Dept. of Psychology & Neuroscience, 235 E. Cameron Ave. CB 3270, Chapel Hill, NC, 27599-3270, USA.Department of Psychology, San Diego State University, USADecades of research in animals and humans show that inflammation is an important regulator of social behavior. While much research in this area has concluded that inflammation causes a withdrawal from social interaction, closer examination of the literature reveals that the effects of inflammation on social behavior are much more nuanced. Indeed, while many studies do show that increases in inflammation lead to social withdrawal, other studies show the exact opposite, finding that inflammation leads to an increase in social approach behavior. Critically, whether an organism withdraws or approaches when inflamed may depend on the whether the target of the behavior is a close other or a stranger. In the present paper, we review both animal research and our initial research in humans that has utilized experimental manipulations of inflammation and examined their effects on social approach behavior. We argue, based on complementary theoretical perspectives and supporting evidence from the literature, that there are three critical next steps for translational work examining the effects of inflammation on social behavior: (1) We need to study actual social behavior, as expressed toward both close others and strangers; (2) We should examine not just the social behavior of the inflamed individual, but also the behavior of others interacting with an inflamed individual; and (3) We must consider the relative increases in inflammation (i.e., higher vs. lower) as a contributor to social withdrawal vs. approach. Ultimately, we urge the field to move beyond a singular focus on inflammation and social withdrawal so that we can develop a more comprehensive understanding of the effects of inflammation on a variety of social behaviors.http://www.sciencedirect.com/science/article/pii/S2666354621001058InflammationSocial behaviorSocial withdrawalSocial approachSocial interactionsCytokines
spellingShingle Keely A. Muscatell
Tristen K. Inagaki
Beyond social withdrawal: New perspectives on the effects of inflammation on social behavior
Brain, Behavior, & Immunity - Health
Inflammation
Social behavior
Social withdrawal
Social approach
Social interactions
Cytokines
title Beyond social withdrawal: New perspectives on the effects of inflammation on social behavior
title_full Beyond social withdrawal: New perspectives on the effects of inflammation on social behavior
title_fullStr Beyond social withdrawal: New perspectives on the effects of inflammation on social behavior
title_full_unstemmed Beyond social withdrawal: New perspectives on the effects of inflammation on social behavior
title_short Beyond social withdrawal: New perspectives on the effects of inflammation on social behavior
title_sort beyond social withdrawal new perspectives on the effects of inflammation on social behavior
topic Inflammation
Social behavior
Social withdrawal
Social approach
Social interactions
Cytokines
url http://www.sciencedirect.com/science/article/pii/S2666354621001058
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