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Brain Sensitivity to Exclusion is Associated with Core Network Closure.

Joseph B Bayer¹, Matthew Brook O'Donnell², Christopher N Cascio³

¹School of Communication, The Ohio State University, Columbus, OH, USA. bayer.66@osu.edu.

Scientific Reports

|October 31, 2018

Summary

Neural responses to social exclusion in adolescent males correlate with their social network structure. This suggests brain activity related to social pain may influence how individuals form and maintain friendships.

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Area of Science:

Neuroscience
Social Psychology
Network Science

Background:

Humans possess innate drives for social connection, biologically regulated.
Individual differences in sensitivity to social threats can shape social environment preferences.
Understanding the link between neural responses and social network structure is crucial.

Purpose of the Study:

To investigate the association between neural responses to social exclusion and social network characteristics in adolescent males.
To explore how brain activity in response to peer exclusion relates to friendship network density and structure.

Main Methods:

Utilized functional magnetic resonance imaging (fMRI) to measure brain activity in adolescent males (n=74) during a social exclusion task.
Collected social network data from participants' Facebook usage.
Analyzed neural responses in hypothesized "social pain" brain regions (dACC, AI, subACC).

Main Results:

Neural reactivity in dACC, AI, and subACC during social exclusion was significantly associated with higher density and transitivity in core friendship networks.
This indicates a link between the brain's response to exclusion and the structure of an individual's social network.

Conclusions:

Neural responses to social exclusion may contribute to the formation of "safer" or more robust social networks.
The study highlights the potential of integrating social cognitive tendencies with social structural properties for a comprehensive understanding of social behavior.