Cognitive mechanisms for human flocking dynamics
Seth Frey, Robert L. Goldstone

TL;DR
This paper demonstrates through experiments that sophisticated human reasoning, including recursive anticipation and concept formation, supports complex flocking behaviors in social groups across various game settings.
Contribution
It reveals that advanced reasoning processes support, rather than suppress, complex social dynamics like flocking, highlighting the role of recursive anticipation and concept formation.
Findings
Flocking behavior is driven by recursive anticipation of others' reasoning.
Sophisticated flocking persists across diverse game types, indicating robustness.
Participants' recursive reasoning is limited by social norms, not cognitive ability.
Abstract
Low-level "adaptive" and higher-level "sophisticated" human reasoning processes have been proposed to play opposing roles in the emergence of unpredictable collective behaviors like crowd panics, traffic jams, and market bubbles. While adaptive processes are ubiquitous in mechanistic theories of emergent social complexity, complementary theories understand incentives, education, and other inducements to rationality as able to suppress such outcomes. We show in a series of laboratory experiments that, rather than suppressing complex social dynamics, sophisticated reasoning processes can support them. Our experiments elicit flocking behavior in groups and show that it is driven by the human ability to recursively anticipate the reasoning of others. We identify this sophisticated flocking in three different games---the Beauty Pageant, Mod Game, and Runway Game---across which game theory…
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