---
abstract: "Using Monte Carlo simulations, we study the evolution of contigent cooperation and ethnocentrism in the one-move game. Interactions and reproduction among computational agents are simulated on undirected and directed Barabási-\r\nAlbert (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 irrespective of the mode of reproduction, ethnocentric strategy becomes common even though cooperation is individually costly and mechanisms such as reciprocity or conformity are absent. Moreover, our results indicate that the spread of favoritism toward similar others highly depends on the network topology and the associated heterogeneity of the studied population."
altloc: []
chapter: ~
commentary: ~
commref: ~
confdates: ~
conference: ~
confloc: ~
contact_email: ~
creators_id: []
creators_name:
  - family: Lima
    given: Francisco W.S.
    honourific: ''
    lineage: ''
  - family: Hadzibeganovic
    given: Tarik
    honourific: ''
    lineage: ''
  - family: Stauffer
    given: Dietrich
    honourific: ''
    lineage: ''
date: 2009
date_type: completed
datestamp: 2009-05-30 15:39:57
department: ~
dir: disk0/00/00/64/47
edit_lock_since: ~
edit_lock_until: ~
edit_lock_user: ~
editors_id: []
editors_name: []
eprint_status: archive
eprintid: 6447
fileinfo: /style/images/fileicons/application_pdf.png;/6447/1/evolution_of_ethnocentrism.pdf
full_text_status: public
importid: ~
institution: ~
isbn: ~
ispublished: ~
issn: ~
item_issues_comment: []
item_issues_count: 0
item_issues_description: []
item_issues_id: []
item_issues_reported_by: []
item_issues_resolved_by: []
item_issues_status: []
item_issues_timestamp: []
item_issues_type: []
keywords: 'Monte Carlo simulation, complex networks, in-group favoritism, ethnocentrism, agent-based model, evolutionary model.'
lastmod: 2011-03-11 08:57:21
latitude: ~
longitude: ~
metadata_visibility: show
note: ~
number: ~
pagerange: ~
pubdom: FALSE
publication: ~
publisher: ~
refereed: FALSE
referencetext: ~
relation_type: []
relation_uri: []
reportno: ~
rev_number: 26
series: ~
source: ~
status_changed: 2009-05-30 15:39:57
subjects:
  - comp-sci-stat-model
  - bio-socio
  - bio-pop
  - bio-evo
succeeds: ~
suggestions: ~
sword_depositor: ~
sword_slug: ~
thesistype: ~
title: Evolution of ethnocentrism on undirected and directed Barabási-Albert networks
type: preprint
userid: 7522
volume: ~
<script src="//archive-bar.soton.ac.uk/archive-bar.js"></script>