Social hierarchy is important that can not be ignored in human socioeconomic activities and the animal world. Here we incorporate this factor into evolutionary game to see what impact it could have on cooperation outcome. The probabilistic strategy adoption between two players then only determined by their payoffs, but also difference -- high rank are more likely reproduce strategies than peers...

Understanding human cooperation is a major scientific challenge. While cooperation is typically explained with reference to individual preferences, a recent cognitive process view hypothesized that cooperation is regulated by socially acquired heuristics. Evidence for the social heuristics hypothesis rests on experiments showing that time-pressure promotes cooperation, a result that can be inte...

In an environment in which free-riders are better off than cooperators, social control is required to foster and maintain cooperation. There are two main paths through which social control can be applied: punishment and reputation. Our experiments explore the efficacy of punishment and reputation on cooperation rates, both in isolation and in combination. Using a Public Goods Game, we are inter...

Sustaining cooperation among self-interested agents is critical for the proliferation of emerging networked communities, such as the communities formed by social networking services. Providing incentives for cooperation in networked communities is particularly challenging because of their unique features: a large population of anonymous agents interacting infrequently, having asymmetric interes...

The topic in question is concerned with the sociological aspect of literature referring to Iran’s literary and historical experience. The basis of sociological criticism is built on the premise that literary works are the products of social life and that a comprehensive understanding of a work without considering its social aspects is impractical. To reach a better, more scientific, and more pr...

We show that fluid organizations display higher levels of cooperation than attainable by groups with either a fixed social structure or lacking one altogether. By moving within the organization, individuals cause restructurings that facilitate cooperation. Computer experiments simulating fluid organizations faced with a social dilemma reveal a myriad of complex cooperative behaviors that result...