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The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm

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Published on: October 20, 2022

Cooperation among non-relatives evolves by state-dependent generalized reciprocity.

Zoltán Barta¹, John M McNamara, Dóra B Huszár

¹Department of Evolutionary Zoology, University of Debrecen, Debrecen, Hungary. zbarta@delfin.unideb.hu

Proceedings. Biological Sciences

|September 24, 2010

Summary

Cooperation can evolve in large groups through generalized reciprocity, where individuals help others based on past interactions, even with limited cognitive abilities. This mechanism offers a new perspective on the evolution of social behavior.

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Area of Science:

Evolutionary biology
Behavioral ecology
Game theory

Background:

Reciprocal altruism is a key theory for understanding cooperation between non-kin.
Cognitive limitations can impede direct and indirect reciprocity, which require significant mental capacity.

Purpose of the Study:

To investigate an alternative mechanism for the evolution of cooperation in large groups.
To demonstrate that generalized reciprocity can evolve without advanced cognitive abilities.

Main Methods:

Modeling cooperation dynamics using a state-based generalized reciprocity strategy.
Analyzing the evolutionary stability of this strategy under various conditions.

Main Results:

Cooperation can evolve through generalized reciprocity (help anyone if helped by someone) in large groups.
This strategy relies on a state variable updated by the outcome of the last interaction with an anonymous partner.
The mechanism emerges through small evolutionary steps and is robust across a wide range of conditions.

Conclusions:

State-based generalized reciprocity provides a plausible pathway for the evolution of cooperation without high cognitive demands.
This mechanism may explain the development of complex social behaviors in diverse organisms.
It offers a simpler alternative to direct and indirect reciprocity for facilitating cooperation.