Network reciprocity has been successfully put forward (since M. A. Nowak and R. May's, 1992, influential paper) as the simplest mechanism-requiring no strategical complexity-supporting the evolution of cooperation in biological and socioeconomic systems. The mechanism is actually the network,...

Cooperation in social dilemmas plays a pivotal role in the formation of systems at all levels of complexity, from replicating molecules to multi-cellular organisms to human and animal societies. In spite of its ubiquity, the origin and stability of cooperation pose an evolutionary conundrum,...

Chapter 1 Introduction -- Chapter 2 Basic theory of In 2 × 2 games (1 Non-linear dynamical system, 2 2×2 games, 3 Multi-players games) -- Chapter 3 Network reciprocity (1 Five fundamental mechanism to add social viscosity, 2 Substantial mechanism of network reciprocity, 3 Discrete, mixed and...

Social norms are customary or ideal forms of behavior to which individuals in a group try to conform. From an analytical standpoint, the key feature of social norms is that they induce a positive feedback loop between individual and group behavior: the more widely that a norm is practiced by...