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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Prosody Predicts Contest Outcome in Non-Verbal Dialogs
Amélie N Dreiss1,2, Philippe G Chatelain1,3, Alexandre Roulin1
1Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland.
Plos One
|December 2, 2016
Summary
Humans can use subtle sound variations, or prosody, to win conflicts without speaking. This non-verbal communication strategy helps in negotiations when other communication channels are unavailable.
Area of Science:
- Psychology
- Linguistics
- Animal Behavior
Background:
- Non-verbal communication is crucial for relationships and negotiation success.
- The extent to which humans use rhythm and prosody as sole communication tools is under-explored.
Purpose of the Study:
- To analyze human ability to resolve conflict using only non-verbal whistle sounds.
- To investigate the role of prosody in non-verbal negotiation, independent of semantics.
Main Methods:
- Pairs of subjects communicated non-verbally using whistle sounds to compete for a resource.
- Analysis focused on prosodic features, specifically whistle accentuation, used during interaction.
- Naive listeners identified the winning whistler based on observed prosodic cues.
Main Results:
- Participants spontaneously used subtle prosodic variations (accentuating initial whistles) to compete.
- Increased whistle production alone was not the primary indicator of winning.
- Listeners accurately identified winners based on the prosodic feature of whistle accentuation.
Conclusions:
- Humans can employ subtle prosody in non-verbal communication to assert dominance in conflicts.
- This ability highlights a potential link between non-verbal signaling and verbal communication.
- Findings underscore the significance of non-verbal cues in negotiation processes.
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