Group Formation with a Network Constraint
Group formation is important in many economic contexts. The current literature on group formation assumes that individuals may join any existing group. In this paper, I consider the implications of social, geographic, and informational constraints to group membership decisions. I embed the players in a network of relationships, which constrains their choice of groups–they may only join a group if that group contains a member that they are connected to on the network. I then examine how this network constraint affects the equilibrium group structure. I show that even with complete information, unconstrained individuals form groups that are inefficiently large. When individuals are constrained, the resulting group structures are much closer to the socially optimal group structure, because the constraint limits the ability of the individual to free ride on the efforts of other group members. The efficiency of the outcome is related to the structure of the network constraint–outcomes are more efficient when networks are sparse and have few random connections.
|Date of creation:|
|Contact details of provider:|| Postal: Tepper School of Business, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213-3890|
Web page: http://www.tepper.cmu.edu/
|Order Information:||Web: http://student-3k.tepper.cmu.edu/gsiadoc/GSIA_WP.asp|
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Inés Macho-Stadler & David Pérez-Castrillo & Nicol? Porteiro, 2002.
"Sequential Formation of Coalitions through Bilateral Agreements,"
UFAE and IAE Working Papers
515.02, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
- Inés Macho-Stadler & David Pérez-Castrillo & Nicolás Porteiro, 2003. "Sequential Formation of Coalitions through Bilateral Agreements," Working Papers 84, Barcelona Graduate School of Economics.
- Heintzelman, Martin D. & Salant, Stephen W. & Schott, Stephan, 2009. "Putting free-riding to work: A Partnership Solution to the common-property problem," Journal of Environmental Economics and Management, Elsevier, vol. 57(3), pages 309-320, May.
- Heintzelman, Martin & Salant, Stephen W. & Schott, Stephan, 2008. "Putting Free-Riding to Work: A Partnership Solution to the Common-Property Problem," MPRA Paper 9804, University Library of Munich, Germany.
- Gabrielle Demange & Wooders Myrna, 2005. "Group Formation in Economics: Networks, Clubs and Coalitions," Post-Print halshs-00576778, HAL.
- Arnold, Tone & Wooders, Myrna, 2002. "Dynamic Club Formation With Coordination," The Warwick Economics Research Paper Series (TWERPS) 640, University of Warwick, Department of Economics.
- Tone Arnold & Myrna Wooders, 2005. "Dynamic Club Formation with Coordination," Vanderbilt University Department of Economics Working Papers 0522, Vanderbilt University Department of Economics.
- Hart, Sergiu & Kurz, Mordecai, 1983. "Endogenous Formation of Coalitions," Econometrica, Econometric Society, vol. 51(4), pages 1047-1064, July.
- Page Jr., Frank H. & Wooders, Myrna, 2007. "Networks and clubs," Journal of Economic Behavior & Organization, Elsevier, vol. 64(3-4), pages 406-425. Full references (including those not matched with items on IDEAS)
When requesting a correction, please mention this item's handle: RePEc:cmu:gsiawp:799758233. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Steve Spear)
If references are entirely missing, you can add them using this form.