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Forber and Smead (2014) analyze how increasing the fitness benefits associated with prosocial behavior can increase the fitness of spiteful individuals relative to their prosocial counterparts, so that selection favors spite over prosociality. This poses a problem for the evolution of prosocial beha...

In the paradigm of Lewis-Skyrms signaling games, the emergence of linguistic conventions is a matter of equilibrium selection. What happens when an equilibrium has ``natural salience'' -- stands out as uniquely attractive to the players? We present two models. We find that the dynamics of natural sa...