Evolution of ethnocentrism on undirected and directed Barabási-Albert networks

@article{Lima2009EvolutionOE,
  title={Evolution of ethnocentrism on undirected and directed Barab{\'a}si-Albert networks},
  author={F. W. S. Lima and Tarik Hadzibeganovic and Dietrich Stauffer},
  journal={Physica A-statistical Mechanics and Its Applications},
  year={2009},
  volume={388},
  pages={4999-5004}
}
Abstract Using Monte Carlo simulations, we study the evolution of contingent cooperation and ethnocentrism in the one-shot game. Interactions and reproduction among computational agents are simulated on undirected and directed Barabasi–Albert (BA) networks. We first replicate the Hammond–Axelrod model of in-group favoritism on a square lattice and then generalize this model on undirected and directed BA networks for both asexual and sexual reproduction cases. Our simulations demonstrate that… Expand
Evolution of egoism on semi-directed and undirected Barabási-Albert networks
Through Monte Carlo simulations, we study the evolution of the four strategies: Ethnocentric, altruistic, egoistic and cosmopolitan in one community of individuals. Interactions and reproductionExpand
Evolution of tag-based cooperation on Erdős–Rényi random graphs
Here, we study an agent-based model of the evolution of tag-mediated cooperation on Erdős–Renyi random graphs. In our model, agents with heritable phenotypic traits play pairwise Prisoner'sExpand
Effects of reproductive skew on the evolution of ethnocentrism in structured populations with variable size
TLDR
The heterogeneity of reproductive time scales is investigated as a possible mechanism for the reduction of ethnocentric behavior and the promotion of global unconditional cooperation in phenotypically diverse populations with demographic fluctuations and it is found that this ethnocentrism-controlling potency of reproductive heterogeneity depends on the underlying population structure. Expand
Pitfalls in Spatial Modelling of Ethnocentrism: A Simulation Analysis of the Model of Hammond and Axelrod
TLDR
It will be shown that agents with an ingroup bias are successful compared to unconditional co-operators since they only exclude non-clones, but are outcompeted by less error-prone kin identifiers, and the results of the simulations can be explained by a simple form of kin selection. Expand
The Evolutionary Dominance of Ethnocentric Cooperation
TLDR
It is shown that ethnocentrism eventually overcomes its closest competitor, humanitarianism, by exploiting humanitarian cooperation across group boundaries as world population saturates, including early stages of humanitarian dominance. Expand
Competitive intransitivity, population interaction structure, and strategy coexistence.
TLDR
The positive effect of competitive intransitivity on strategy coexistence holds when competition occurs on networks toward the spatial end of the continuum, however, in networks that are sufficiently disordered, increasingly violent fluctuations in strategy frequencies can lead to extinctions and the prevalence of monocultures. Expand
( 2013 ) Pitfalls in Spatial Modelling of Ethnocentrism : A Simulation Analysis of the Model of
Ethnocentrism refers to the tendency to behave differently towards strangers based only on whether they belong to the ingroup or the outgroup. It is a widespread phenomenon that can be triggered byExpand
Benefits of memory for the evolution of tag-based cooperation in structured populations
TLDR
It is found that the previously reported decline of cooperation in memory-based models, typically observed at a high memory capacity, is now prevented with the help of tags, suggesting that the evolutionary advantages of memory capacity limits may be far more complex than previously assumed. Expand
Memory-based evolutionary game on small-world network with tunable heterogeneity
TLDR
A memory-based agent model is introduced and the Prisoner's Dilemma game on a Heterogeneous Newman–Watts small-world network based on a Genetic Algorithm is investigated, focusing on heterogeneity’s role in the emergence of cooperative behaviors. Expand
Evolution of tag-mediated altruistic behavior in one-shot encounters on large-scale complex networks
TLDR
This study suggests that intra-tag generosity can quickly evolve to dominate over other strategies in spatially structured environments that are otherwise detrimental to cooperative behavior. Expand
...
1
2
3
4
...

References

SHOWING 1-10 OF 98 REFERENCES
The Evolution of Ethnocentrism
Ethnocentrism is a nearly universal syndrome of attitudes and behaviors, typically including in-group favoritism. Empirical evidence suggests that a predisposition to favor in-groups can be easilyExpand
Agent‐based Computer Simulations of Language Choice Dynamics
TLDR
The findings uncover some of the unique properties of opinion formation in social groups when the process is affected by asymmetric noise distribution, unstable intergroup boundaries, and different migratory behaviors. Expand
A new route to the evolution of cooperation
TLDR
It is shown that cooperators are capable of exploring the heterogeneity of the population structure to become evolutionary competitive and cooperation becomes the dominating trait in scale‐free networks of contacts in which the few highly connected individuals are directly inter‐connected, in this way contributing to self‐sustain cooperation. Expand
MAJORITY-VOTE ON DIRECTED BARABÁSI–ALBERT NETWORKS
On directed Barabasi–Albert networks with two and seven neighbours selected by each added site, the Ising model was seen not to show a spontaneous magnetisation. Instead, the decay time for flippingExpand
Evolutionary dynamics of social dilemmas in structured heterogeneous populations.
TLDR
It is shown that, for all dilemmas, increasing heterogeneity favors the emergence of cooperation, such that long-term cooperative behavior easily resists short-term noncooperative behavior. Expand
Majority-Vote on Undirected Barabasi-Albert Networks
On Barabási-Albert networks with z neighbours selected by each added site, the Ising model was seen to show a spontaneous magnetisation. This spontaneous magnetisation was found below a criticalExpand
Evolution of cooperation without reciprocity
TLDR
Computer simulations are used to show that cooperation can arise when agents donate to others who are sufficiently similar to themselves in some arbitrary characteristic, or ‘tag’, which can be a marking, display, or other observable trait. Expand
SIMULATION OF MAJORITY RULE DISTURBED BY POWER-LAW NOISE ON DIRECTED AND UNDIRECTED BARABÁSI–ALBERT NETWORKS
On directed and undirected Barabasi–Albert networks the Ising model with spin S = 1/2 in the presence of a kind of noise is now studied through Monte Carlo simulations. The noise spectrum P(n)Expand
Cooperation, social networks, and the emergence of leadership in a prisoner's dilemma with adaptive local interactions.
TLDR
It is shown how the network adaptation dynamics favors the emergence of cooperators with the highest payoff, and these "leaders" are shown to sustain the global cooperative steady state. Expand
Evolution of contingent altruism when cooperation is expensive.
TLDR
An agent-based model is used to demonstrate a new mechanism that combines both lines of work to show when and how favoritism toward apparently similar others can evolve in the first place, and it is shown that this joint mechanism vastly increases the range of environments in which contingent altruism can evolved in viscous populations. Expand
...
1
2
3
4
5
...