The dual role of constructive agents in public goods games: limited alone, amplifying cooperation with destructive agents
Authors: Yuting Dong, Zhixue He, Chen Shen, Lei Shi, Jun Tanimoto
AI-generated Key Points
- Paradoxical phenomenon in public goods games: Destructive agents can enhance cooperation
- Introduction of constructive agents: Provide benefits to both cooperators and defectors, adding a new dynamic to cooperation dynamics
- Impact of constructive agents on defection equilibrium: Alone does not significantly impact, but coexistence with destructive agents can strengthen the latter's ability for cooperation through cyclic dominance
- Balancing benefits and harm from constructive and destructive agents: Constructive agents can neutralize the promotion of cooperation if their benefits outweigh harm inflicted by destructive agents
- Dual role of constructive agents in shaping cooperation dynamics: Emphasizes the importance of evaluating incentive balances in evolutionary game theory
- Individual self-interest considerations within social value orientation frameworks: Influence on cooperation emergence and promotion
- Integration of preferences for own gains and opponent's gains into analyses of cooperative behavior: Shedding light on how rational human behavior impacts cooperative interactions
- Complexity involved in assessing incentives and motivations within evolutionary game theory frameworks
Abstract: Recent studies have revealed a paradoxical phenomenon in public goods games, wherein destructive agents, harming both cooperators and defectors, can unexpectedly bolster cooperation. Building upon this intriguing premise, our paper introduces a novel concept: constructive agents, which confer additional benefits to both cooperators and defectors. We investigate the impact of these agents on cooperation dynamics within the framework of public goods games. Employing replicator dynamics, we find that unlike destructive agents, the mere presence of constructive agents does not significantly alter the defective equilibrium. However, when the benefits from constructive agents are outweighed by the damage inflicted by destructive agents, the coexistence of both agent types can amplify the ability of destructive agents to sustain cooperation. This occurs through the facilitation of a coexistence pattern involving cooperators, defectors, constructive agents, and destructive agents via cyclic dominance. Conversely, if the benefits from constructive agents surpass the harm caused by destructive agents, the presence of constructive agents nullifies the ability of destructive agents to foster cooperation. Our results highlights the nuanced dual role of constructive agents in shaping cooperation dynamics, emphasizing the necessity of carefully assessing incentive balances in evolutionary game theory.
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