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Related Experiment Video

Updated: Jul 1, 2025

The Social Dimension of Stress: Experimental Manipulations of Social Support and Social Identity in the Trier Social Stress Test

The Social Dimension of Stress: Experimental Manipulations of Social Support and Social Identity in the Trier Social Stress Test

Published on: November 19, 2015

Success-driven opinion formation determines social tensions.

Manuel Chica^1,2, Matjaž Perc^3,4,5,6, Francisco C Santos⁷

¹Andalusian Research Institute DaSCI "Data Science and Computational Intelligence", University of Granada, 18071 Granada, Spain.

|March 6, 2024

Summary

This study reveals that individual success in social dilemmas, not just media or ideology, drives polarization. Games emphasizing punishment over greed, like stag-hunt, reduce opinion fragmentation, while those rewarding defection, like prisoner

Keywords:

Computational mathematics Decision science Social sciences

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Area of Science:

Social dynamics and opinion formation
Evolutionary game theory and decision-making

Background:

Polarization is prevalent in public opinion and politics, influenced by media, ideologies, and misinformation.
The microscopic dynamics and fundamental origins of social tensions and polarization remain poorly understood.

Purpose of the Study:

To investigate the microscopic mechanisms driving polarization by linking opinion formation with social dilemma strategies.
To explore how individual-level success in strategic interactions translates to global consensus or fragmentation.

Main Methods:

Coupled opinion formation models with strategy selection in established social dilemma games (stag-hunt, prisoner's dilemma, snowdrift).
Analyzed the impact of game structure (greed vs. punishment) on opinion fragmentation and consensus formation.

Main Results:

Opinion fragmentation was minimized in the stag-hunt game, where defection implies punishment without greed.
Consensus was harder to achieve in the prisoner's dilemma and snowdrift game, where defection offers higher payoffs and evokes greed.
Individual success in pairwise evolutionary comparisons can be a fundamental driver of social tensions.

Conclusions:

Social tensions and polarization may originate from fundamental individual-level principles, challenging top-down explanations.
The structure of social dilemmas, particularly the balance between greed and punishment, significantly influences opinion dynamics.
Understanding individual strategic choices is crucial for comprehending large-scale societal polarization.