Cooperation through imitation and exclusion in networks

Arbeitspapier

We develop a simple model to study the coevolution of interaction structures and action choices in Prisoners' Dilemma games. Agents are boundedly rational and choose both actions and interaction partners via payoff-based imitation. The dynamics of imitation and exclusion yields polymorphic outcomes under a wide range of parameters. Depending on the parameters of the model two scenarios can arise. Either there is full separation of defectors and cooperators, i.e. they are found in two different, disconnected components. Or there is marginalization of defectors, i.e. connected networks emerge with a center of cooperators and a periphery of defectors. Simulations confirm our analytical results and show that the share of cooperators increases with the speed at which the network evolves, increases with the radius of interaction and decreases with the radius of information of agents.

Angaben zum Objekt

• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Series: Nota di Lavoro ; No. 37.2009

Klassifikation und Themen

• Klassifikation: Wirtschaft ; Game Theory and Bargaining Theory: General ; Stochastic and Dynamic Games; Evolutionary Games; Repeated Games ; Network Formation and Analysis: Theory
• Thema: Game Theory ; Cooperation ; Imitation Learning ; Network Formation

Beteiligte, Orts- und Zeitangaben

• Ereignis: Geistige Schöpfung
• (wer): Mengel, Friederike ; Fosco, Constanza
• Ereignis: Veröffentlichung
• (wer): Fondazione Eni Enrico Mattei (FEEM)
• (wo): Milano
• (wann): 2009

Weitere Informationen

• Handle: http://hdl.handle.net/10419/53367
• Letzte Aktualisierung: 10.03.2025, 11:42 MEZ