NDLI: Intergroup conflict, ostracism, and the evolution of cooperation under free migration

Content Provider	Springer Nature Link
Author	Sääksvuori, Lauri
Copyright Year	2014
Abstract	Theoretical investigations and quasi-experimental evidence from modern conflict areas suggest that intergroup conflict and ostracism play a pivotal role in the evolution of cooperation. However, there is little direct evidence about the influence of intergroup conflict on human social behavior in the presence of endogenous group formation and unrestricted migration. This study introduces an experiment to examine the impact of intergroup conflict and ostracism on group formation, and human cooperation in a dynamic environment where group size, the occurrence of intergroup hostility and the threat of ostracism are endogenously determined. Here, we show that intergroup conflict may inhibit merging into single large human coalitions. The threat of ostracism is shown to increase the average group size and cooperation within the society. In addition, we find that competitive pressure between groups decreases the likelihood of social exclusion. Our results suggest that free migration between groups suppresses the impact of between-group competition on within-group cooperation. Moreover, our results stress the role of ostracism as a means to repress competition within groups and enhance group success in competition against other groups.
Starting Page	1311
Ending Page	1319
Page Count	9
File Format	PDF
ISSN	03405443
Journal	Behavioral Ecology and Sociobiology
Volume Number	68
Issue Number	8
e-ISSN	14320762
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-06-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cooperation Group conflict Group formation Ostracism Social behavior Behavioural Sciences Zoology Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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