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Recognizing affiliation in colaughter and cospeech.

Gregory A Bryant1,2, Christine S Wang1, Riccardo Fusaroli3,4

  • 1Department of Communication, University of California, Los Angeles, CA, USA.

Royal Society Open Science
|November 18, 2020
PubMed
Summary
This summary is machine-generated.

Colaughter, or shared laughter, provides accurate social affiliation cues for third-party listeners. This vocal signal effectively communicates relationship information between groups, beyond conversational dynamics.

Keywords:
affiliationcolaughterconversationsocial signallingvocal communication

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Area of Science:

  • Evolutionary psychology
  • Bioacoustics
  • Social cognition

Background:

  • Vocal signaling theories often overlook intergroup dynamics.
  • Colaughter judgments of affiliation are accurate across cultures and linked to speaker arousal.
  • Limited research exists on colaughter's information transmission to third parties compared to simultaneous speech (cospeech).

Purpose of the Study:

  • To investigate if colaughter provides more accurate social affiliation information to third-party listeners than cospeech.
  • To determine if acoustic features of colaughter and cospeech signal relationship status (friends vs. strangers).
  • To explore the role of speaker arousal (indicated by speech/laughter speed) in affiliation judgments.

Main Methods:

  • Listeners evaluated short audio segments (1-3s) of colaughter and cospeech from conversations between friends and strangers.
  • Participants judged the relationship status (friends or strangers) of the individuals in the audio clips.
  • Acoustic analysis included comparing sped-up versions of colaughter and cospeech as proxies for speaker arousal.

Main Results:

  • Colaughter segments enabled more accurate affiliation judgments than cospeech segments, despite being shorter.
  • Increased speed in both colaughter and cospeech segments led to higher likelihood of being perceived as between friends.
  • Sped-up audio did not improve accuracy in distinguishing friends from strangers but influenced perceived relationship closeness.

Conclusions:

  • Colaughter is a potent vocal signal for conveying social relationship information to third-party listeners.
  • Laughter functions effectively in intergroup communication, transmitting social dynamics beyond immediate conversational partners.
  • Findings support laughter's role in signaling social bonds and group affiliation in a broader social context.