Related Experiment Video
Updated: Feb 19, 2026
08:24
The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
Published on: August 25, 2023
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Avalanches of choice: How stranger-to-stranger interactions shape crowd dynamics
Ziqi Wang1, Alessandro Gabbana2,3, Federico Toschi1,4
1Department of Applied Physics and Science Education, Eindhoven University of Technology, Eindhoven 5600 MB, Netherlands.
Summary
Strangers often copy the path of the person in front of them, even if it
Area of Science:
- Collective dynamics
- Human mobility
- Social behavior
Background:
- Understanding pedestrian routing choices is key to crowd dynamics.
- The impact of interactions among unfamiliar individuals on routing is not well understood.
Purpose of the Study:
- To analyze real-world pedestrian behavior at a route split.
- To investigate the influence of social imitation on collective movement.
Main Methods:
- Analysis of high-resolution pedestrian trajectory data from a busy train station over three years.
- Development and application of a stochastic model incorporating route costs, randomness, and social imitation.
Main Results:
- Individuals exhibit a strong tendency to follow the path of the person directly ahead, irrespective of social ties or travel time.
- This imitation behavior results in 'bursty dynamics' and predictable patterns in collective pedestrian movement.
- The stochastic model accurately reproduced observed behaviors, confirming local imitation as the primary driver.
Conclusions:
- Brief interactions between strangers significantly influence large-scale pedestrian movement.
- Findings have implications for crowd management, urban design, and understanding social behavior in public spaces.
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