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Romantic relationships attenuated competition between lovers: evidence from brain synchronization.

Shuyu Jia1, Yujia Meng1, Yuan Gao1

  • 1School of Psychology and Mental Health, North China University of Science and Technology, 21 Bohai avenue, Caofeidian district, Tangshan, Hebei province, China.

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|February 1, 2024
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Summary

Romantic relationships alter competition dynamics, showing reduced win rates and distinct brain synchronization patterns. Interbrain synchrony correlates with female success, highlighting the link between relationships and competitive behavior.

Keywords:
EEGcompetitionhyperscanninginterbrain synchronizationromantic relationships

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Area of Science:

  • Neuroscience
  • Social Psychology
  • Relationship Science

Background:

  • Competition is a key aspect of social interaction, influenced by interpersonal dynamics.
  • Social exchange theory provides a framework for understanding relationship interactions.
  • Interbrain synchronization, measured via electroencephalogram (EEG) hyperscanning, offers insights into neural coordination during social tasks.

Purpose of the Study:

  • To investigate the impact of romantic relationships on competitive behavior.
  • To explore the relationship between interbrain synchronization and competition within romantic dyads.
  • To examine how different relationship types (romantic, friend, stranger) influence neural synchrony during competition.

Main Methods:

  • Utilized electroencephalogram (EEG) hyperscanning technology to record brain activity from pairs of individuals during a competitive task.
  • Analyzed interbrain synchronicity in Alpha and Theta frequency bands at different temporal stages of the competition.
  • Correlated neural synchrony measures with competitive outcomes, specifically win rates, and examined differences across relationship groups.

Main Results:

  • Females exhibited higher win rates in romantic and friend groups compared to stranger groups.
  • Stranger groups showed greater Alpha band interbrain synchrony in the early competition stage (0-200 ms).
  • Romantic groups displayed higher Alpha band synchrony in a later stage (600-800 ms), while Theta band synchrony was significant in stranger and friend groups at specific intervals (400-600 ms, 800-1000 ms).
  • Interbrain synchrony in the Theta band positively correlated with female winning rates.
  • Romantic relationships were associated with reduced competitive drive, impacting attention, emotion, and goal orientation.

Conclusions:

  • Interpersonal coordination is closely linked to interbrain synchronization.
  • Romantic relationships modulate competitive behavior through effects on cognitive and emotional processes.
  • Findings provide a neuroscientific basis for understanding relationship influences on social competition and inform strategies for healthy relationship development.