Reputation has been shown to provide an informal solution to the problem of cooperation in
human societies. After reviewing models that connect reputations and cooperation, we …

In this article, we propose an aspiration-based coevolution of link weight, and explore how
this set-up affects the evolution of cooperation in the spatial prisoner's dilemma game. In …

Whether or not to change strategy depends not only on the personal success of each
individual, but also on the success of others. Using this as motivation, we study the evolution …

Our well-being depends on both our personal success and the success of our society. The
realization of this fact makes cooperation an essential trait. Experiments have shown that …

Innovation and evolution are two processes of paramount relevance for social and biological
systems. In general, the former allows the introduction of elements of novelty, while the latter …

Motivated by the fact that the same social dilemma can be perceived differently by different
players, we here study evolutionary multigames in structured populations. While the core …

We show that the resolution of social dilemmas in random graphs and scale-free networks is
facilitated by imitating not the strategy of better-performing players but, rather, their emotions …

In the context of Evolutionary Game Theory, one of the most noteworthy mechanisms to
support cooperation is spatial reciprocity, usually accomplished by distributing players in a …

In times of plenty expectations rise, just as in times of crisis they fall. This can be
mathematically described as a win-stay-lose-shift strategy with dynamic aspiration levels …

''Three is a crowd” is an old proverb that applies as much to social interactions as it does to
frustrated configurations in statistical physics models. Accordingly, social relations within a …