Template-Type: ReDIF-Paper 1.0 Series: Tinbergen Institute Discussion Papers Creation-Date: 2002-07-10 Number: 02-069/1 Author-Name: Andrea Galeotti Author-Email: galeotti@few.eur.nl Author-Workplace-Name: Erasmus University Rotterdam Author-Name: Sanjeev Goyal Author-Email: s.goyal@qmul.ac.uk Author-Workplace-Name: University of London, and Erasmus University Rotterdam Title: Network Formation with Heterogeneous Players Abstract: This paper studies network formation in settings where players are heterogeneous with respect to benefits as well as the costs of forming links. Our results demonstrate that centrality, center-sponsorship and short network diameter are robust features of equilibrium networks. We find that in a society with many groups, where it is cheaper to connect within groups as compared to across groups, strategic play by individuals leads to a network architecture in which there is a core group which is entirely internally connected while all the other groups are entirely externally linked and hence completely fragmented. Since internal/within group links are cheaper to form, this implies that individual incentives may generate a significant waste of valuable social resources. Classification-JEL: C72; C79 Keywords: Noncooperative games; Network formation; Heterogeneity File-Url: https://papers.tinbergen.nl/02069.pdf File-Format: application/pdf File-Size: 294921 bytes Handle: RePEc:tin:wpaper:20020069