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- W4384342010 abstract "Abstract We consider a society where individuals get divided into different groups, each playing a different strict Nash equilibrium of the same game. Under group selection, a group playing a Nash equilibrium with a higher payoff evolves faster. As individual agents always play a Nash equilibrium, there is no conflict between individual selection and group selection. We define the dynamics of group selection in terms of the replicator dynamic. In the weak form of group selection, the absolute mass of all groups increase but the relative mass of all groups except the one at the Pareto efficient equilibrium go to zero. In the strong form of group selection, even the absolute mass of all groups except the one at the Pareto efficient equilibrium go to zero. We also provide microfoundations to the dynamics of group selection. Finally, we apply the model to the stag hunt game. JEL Classification: C72; C73." @default.
- W4384342010 created "2023-07-15" @default.
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- W4384342010 date "2023-07-14" @default.
- W4384342010 modified "2023-09-25" @default.
- W4384342010 title "Group Selection under the Replicator Dynamic" @default.
- W4384342010 doi "https://doi.org/10.21203/rs.3.rs-3156278/v1" @default.
- W4384342010 hasPublicationYear "2023" @default.
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