Stability of pairwise social dilemma games: destructive agents, constructive agents, and their joint effects

Abstract

Destructive agents, who opt out of the game and indiscriminately harm others, paradoxically foster cooperation, representing an intriguing variant of the voluntary participation strategy. Yet, their impact on cooperation remains inadequately understood, particularly in the context of pairwise social dilemma games and in comparison to their counterparts, constructive agents, who opt out of the game but indiscriminately benefit others. Furthermore, little is known about the combined effects of both agent types on cooperation dynamics. Using replicator dynamics in infinite and well-mixed populations, we find that, contrary to their role in facilitating cooperation in multiplayer games, destructive agents fail to encourage cooperation in pairwise social dilemmas. Instead, they destabilize and may even replace defection in the prisoners' dilemma and stag-hunt games. Similarly, in the chicken game, they can destabilize or replace the mixed equilibrium of cooperation and defection, and they undermine cooperation in the harmony game. Conversely, constructive agents, when their payoffs exceed their contributions to opponents, can exhibit effects similar to destructive agents. However, if their payoffs are lower, while they destabilize defection in prisoners' dilemma and stag-hunt games, they do not disrupt the cooperation equilibrium in harmony games and have a negligible impact on the coexistence of cooperation in chicken games. The combination of destructive and constructive agents does not facilitate cooperation but instead generates complex evolutionary dynamics, including bi-stable, tri-stable, and quad-stable states, with outcomes contingent on their relative payoffs and game types. These results, taken together, enhance our understanding of the impact of the voluntary participation mechanism on cooperation, contributing to a more comprehensive understanding of its influence.

References in corpus (11)

• Statistical physics of human cooperation
• Cooperative Behavior Cascades in Human Social Networks
• Evolutionary games on multilayer networks: A colloquium
• Phase transitions and volunteering in spatial public goods games
• The evolution of cooperation by social exclusion
• Evolutionary games on simplicial complexes
• A novel route to cyclic dominance in voluntary social dilemmas
• Exit rights open complex pathways to cooperation
• The Joker effect: cooperation driven by destructive agents
• Stability and robustness analysis of cooperation cycles driven by destructive agents in finite populations
• Evolution of cooperation in costly institutes

Cited by in corpus (2)

• Constructive agents nullify the ability of destructive agents to foster cooperation in public goods games
• Non-exchangeable evolutionary and mean field games and their applications