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<p>Facial expression has been proposed as a key mechanism in forming and maintaining social relationships. Humans have particularly expressive faces, but direct evidence linking individual level expressivity to group-level social bonding is limited. Here we examined whether spontaneous facial expressivity impacts social popularity during initial group formation. Participants (72 groups, <i>N</i> = 256) engaged in unstructured online interactions in small groups with strangers during which facial behaviour was quantified using automated analysis. Social popularity was measured by calculating social network indices based on relative liking. More facially expressive individuals were rated as warmer and more cooperative, and occupied more central positions in the group social network. In contrast, facial attractiveness did not predict social standing. These findings support the hypothesis that facial expressivity functions to promote cooperative relationships during group formation. </p>

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Facially Expressive People are More Popular in Newly Formed Groups: A Social Network Analysis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月27日

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  • Alisa Balabanova,
  • Eithne Kavanagh,
  • Tom Kupfer,
  • Bridget Waller

摘要

Facial expression has been proposed as a key mechanism in forming and maintaining social relationships. Humans have particularly expressive faces, but direct evidence linking individual level expressivity to group-level social bonding is limited. Here we examined whether spontaneous facial expressivity impacts social popularity during initial group formation. Participants (72 groups, N = 256) engaged in unstructured online interactions in small groups with strangers during which facial behaviour was quantified using automated analysis. Social popularity was measured by calculating social network indices based on relative liking. More facially expressive individuals were rated as warmer and more cooperative, and occupied more central positions in the group social network. In contrast, facial attractiveness did not predict social standing. These findings support the hypothesis that facial expressivity functions to promote cooperative relationships during group formation.