Strong ties in a small world (2010)
Leij, Marco J. Van Der, Goyal, Sanjeev
This paper examines the celebrated "Strength of weak ties" theory of Granovetter(1973). We formalize the theory in terms of two hypotheses: one, for any threeplayers with two links present, the...
Bramoullé, Yann, Goyal, Sanjeev
Favoritism is the act of offering jobs, contracts and resources to members of one's social group in preference to outsiders. Favoritism is widely practiced and this motivates an exploration of its...
Matching and network effects (2009)
Fafchamps, Marcel, Goyal, Sanjeev, Leij, Marco J. Van Der
The matching of individuals in teams is a key element in the functioning of an economy. The network of social ties can potentially transmit important information on abilities and reputations and also...
GALEOTTI, Andrea, GOYAL, Sanjeev, JACKSON, Matthew O., VEGA-REDONDO, Fernando, YARIV, Leeat
In a variety of contexts - ranging from public goods provision to information collection - a player's well-being depends on own action as well as on the actions taken by his or her neighbors. We...
Venkatesh Bala, Sanjeev Goyal, Fonds Fcar
When there are competing technologies or products with unknown payo#s which are adopted over time within a society, an important question is whether conformism or diversity will prevail. We use a...
Connections seem to matter both at the individual level, in terms how well a person, a firm, or a country does, as well as for the aggregate performance of the system. The advantages that accrue from...
A Theory of Strategic Diffusion (2007)
Goyal, Sanjeev, Galeotti, Andrea
The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant 'local' influence in...
A Theory of Strategic Diffusion (2007)
Goyal, Sanjeev, Galeotti, Andrea
The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant 'local' influence in...
A Theory of Strategic Diffusion (2007)
Goyal, Sanjeev, Galeotti, Andrea
The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant 'local' influence in...
A Theory of Strategic Diffusion (2007)
Goyal, Sanjeev, Galeotti, Andrea
The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant 'local' influence in...
A Theory of Strategic Diffusion (2007)
Goyal, Sanjeev, Galeotti, Andrea
The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant 'local' influence in...
Structural holes in social networks (2007)
GOYAL, Sanjeev, VEGA-REDONDO, Fernando
We consider a setting where every pair of players that undertake a transaction (e.g. exchange goods or information) creates a unit surplus. A transaction can take place only if the players involved...
Thesis Title: Networks and Learning in Game Theory (2007)
Willemien Kets, Sanjeev Goyal, Matthew Jackson, Michael Kosfeld, Stef Tijs, Eric Van Damme, ...
InP(110) surfaces studied by low-temperature scanning tunneling microscopy’, Physical Review B, 63, 125336. 2001 R. de Kort, W. Kets and H. van Kempen, ‘A low-temperature scanning tunneling...
Andrea Galeotti, Sanjeev Goyal, Matthew O. Jackson, Fernando Vega-redondo, Leeat Yariv, Jel Classi…cation D
In a variety of contexts – ranging from public goods provision to information collection – a player’s well-being depends on own action as well as on the actions taken by his or her neighbors....
Trust and Social Collateral (2006)
Markus Mobius, Adam Szeidl, Pablo Casas-arce, Rachel Cranton, Andrea Galeotti, Sanjeev Goyal, ...
This paper builds a theory of informal contract enforcement in social networks. In our model, connections between individuals generate social collateral that can be used to control moral hazard when...
Daniel Hojman, Adam Szeidl, Sanjeev Goyal, Kenneth Judd, Larry Katz, Markus Mobius, ...
Many economic and social networks share two common organizing features: (1) a core-periphery structure; (2) positive correlation between network centrality and payo¤s. In this paper, we build a...
A survey of models of network formation: stability and efficiency (2003)
Matthew O. Jackson, Gabrielle Demange, Sanjeev Goyal, Anne Van Den Nouwel
I survey the recent literature on the formation of networks. I provide definitions of network games, a number of examples of models from the literature, and discuss some of what is known about the...
Sanjeev Goyal, Edited G. Demange, M. Wooders, William Brock, Gabrielle Demange, Leigh Tesfatsion, ...
Vega-Redondo for useful comments on an earlier version of the paper.
A Survey of Models of Network Formation: Stability and Efficiency (2003)
Matthew O. Jackson, Gabrielle Demange, Sanjeev Goyal, Anne Van Den Nouwel
I survey the recent literature on the formation of networks. I provide definitions of network games, a number of examples of models from the literature, and discuss some of what is known about the...
Network formation and anti-coordination games (2002)
Bramoulle, Yann, López Pintado, Dunia, Goyal, Sanjeev, Vega Redondo, Fernando
We study a setting in which individual players choose their partners as well as a mode of behavior in 2 x 2 anti-coordination games -- games where a player's best response is to behave differently...
Firms, networks and markets: A survey of recent research (2002)
Sanjeev Goyal, José Luis Moraga-gonzález
This paper presents a survey of recent research on the formation of networks between firms. The paper considers networks in two economic environments. We first consider networks of research...
Learning, network formation and coordination (2001)
Goyal, Sanjeev, Vega Redondo, Fernando
In many economic and social contexts, individual players choose their partners and also decide on a mode of behavior in interactions with these partners. This paper develops a simple model to examine...
Networks of CollaborationinOligopoly (2000)
Sanjeev Goyal, Sumit Joshiy, Debraj Ray, Pauline Rutsaert, O Vega-redondo
In an oligopoly, prior to choosing quantities/prices, each ¯rm has an opportunity to form pair-wise collaborative links with other ¯rms. These pair-wise links lower costs of production of the ¯rms...
Group Size and Collective Action: Third-Party Monitoring in Common-Pool Resources (1999)
"This paper examines the hypothesis that group size is inversely related to successful collective action. A distinctive aspect of the paper is that it combines a non-cooperative game-theoretic...
Group Size and Collective Action (1997)
"This paper examines the Olsonian thesis that group size is inversely related to successful collective action. We start with an empirical analysis based on primary data. This data gives information...
Learning from Neighbors (1996)
Venkatesh Bala, Sanjeev Goyal, Hsueh-ling Huynh, Boyan Jovanovic, Ehud Kalai, Nick Kiefer, ...
When payoffs from different actions are unknown, agents use their own past experience as well as the experience of their neighbors to guide their current decision making. This paper develops a...
Essays on the economics of learning / (1990)
Thesis (Ph. D.)--Cornell University, August, 1990.
Network Formation and Social Coordination
Sanjeev Goyal, Fernando Vega-Redondo
This paper develops a simple model to examine the interaction between partner choice and individual behavior in games of coordination. An important ingredient of our approach is the way we model...
Economics: An Emerging Small World?
Sanjeev Goyal, Marco Van Der Leij, José Luis Moraga-González
This paper examines the small world hypothesis. The first part of the paper presents empirical evidence on the evolution of a particular world: the world of journal publishing economists during the...
Scientific Networks and Co-authorship
Marcel Fafchamps, Marco J. Van Der Leij, Sanjeev Goyal
Using a database of all published articles in economic journals over the last 30 years, we investigate the determinants of scientific co-authorship. We find that, controlling for pair-wise fixed...
Many of the interesting issues in the economics of networks-information transmission, individual incentives with local externalities, investments in connections, and the structure of complex...
Firms, networks and markets : a survey of recent research.
Sanjeev GOYAL, José Luis MORAGA-GONZÂLEZ
This paper presents survey of recent research on the formation of networks between firms. The paper considers net works in two economic environments. We first consider networks of research...
NETWORK FORMATION AND ANTI-COORDINATION GAMES
Dunia López-Pintado, Fernando Vega Redondo, Sanjeev Goyal, Yann Bramoulle
We study a setting in which individual players choose their partners as well as a mode of behavior in 2 x 2 anti-coordination games -- games where a player's best response is to behave differently...
Economics: An Emerging Small World
Sanjeev Goyal, Marco J. Van Der Leij, José Luis Moraga-Gonzalez
A Theory of Strategic Diffusion
Sanjeev Goyal, Andrea Galeotti
The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant ‘local’ influence in...
Introduction to Connections: An Introduction to the Economics of Networks
Networks pervade social and economic life, and they play a prominent role in explaining a huge variety of social and economic phenomena. Standard economic theory did not give much credit to the role...
A Theory of Learning with Heterogeneous Agents.
Bala, Venkatesh, Goyal, Sanjeev
The authors study learning in organizations comprised of short-lived agents with heterogeneous beliefs. It is shown that the sequence of actions converges in probability to the set of ex-post optimal...
Sanjeev Goyal, José Luis Moraga
This discussion paper has resulted in a publication in the Rand Journal of Economics, 2001, 32(4), 686-707.
Learning, Network Formation and Coordination
Sanjeev Goyal, Fernando Vega-Redondo
In many economic and social contexts, individual players choose their partners and also decide on a mode of behavior in interactions with these partners. This paper develops a simple model to examine...
Network Formation with Heterogeneous Players
Andrea Galeotti, Sanjeev Goyal
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,...
Marco Van Der Leij, Sanjeev Goyal
In this paper we test the celebrated `Strength of weak ties' theory of Granovetter (1973). We test two hypotheses on the network structure in a data set of collaborating economists. While we find...
Public Funding of Research and Corporate Co-sponsorship
Sanjeev Goyal, Pauline Rutsaert
The results of R&D projects carried out by public laboratories are often not used by firms. This observation has led to policies that provide for a more active role for private firms in the...
Bala, Venkatesh, Goyal, Sanjeev
The authors consider a sequential decision model in which entrepreneurs decide on whether to enter a potential new market. Individual entrepreneurs have private expectations about the new market's...
LEARNING, NETWORK FORMATION AND COORDINATION
Fernando Vega Redondo, Sanjeev Goyal
In many economic and social contexts, individual players choose their partners and also decide on a mode of behavior in interactions with these partners. This paper develops a simple model to examine...
Andrea Galeotti, Sanjeev Goyal, Matthew O. Jackson, Fernando Vega-Redondo, Leeat Yariv
In a variety of contexts - ranging from public goods provision to information collection - a player's well-being depends on own action as well as on the actions taken by his or her neighbors. We...
Bala, Venkatesh, Goyal, Sanjeev
When payoffs from different actions are unknown, agents use their own past experience as well as the experience of their neighbors to guide their decision making. In this paper, the authors develop a...
Learning, Network Formation and Coordination
Sanjeev Goyal, Fernando Vega-Redondo
In many economic and social contexts, individuals can undertake a transaction only if they are `linked' or related to each other. We take the view that these links are costly, in the sense that it...
The Political Economy of Regionalism
We examine the incentives of regions in a country to unite or to separate. We find that smaller regions have greater incentives to unite, relative to larger regions. We show, however, that on the...
Technological change in markets with network externalities
De Bijl, Paul W. J., Goyal, Sanjeev
We study a setting with many countries; in each country there are firms that can sell in the domestic as well as foreign markets. Countries can sign bilateral free-trade agreements that lower import...
The Political Economy of Regionalism
We examine the incentives of regions in a country to unite or to separate. We find that smaller regions have greater incentives to unite, relative to larger regions. We show, however, that on the...
Networks of Collaboration in Oligopoly
In an oligopoly, prior to competing in the market, firms have an opportunity to form pair-wise collaborative links with other firms. These pair-wise links involve a commitment of resources and lead...
Sanjeev Goyal, Alexander Konovalov, José Luis Moraga
Publication is forthcoming in the Journal of the European Economic Association.
Economics: An Emerging Small World?
Sanjeev Goyal, Marco Van Der Leij, José Luis Moraga-González
This paper examines the small world hypothesis. The first part of the paper presents empirical evidence on the evolution of a particular world: the world of journal publishing economists during the...
A Non-Cooperative Theory of Network Formation
We present an approach to network formation based on the notion that social networks are formed by individual decisions that trade off the costs of forming and maintaining links against the potential...
Economics: An Emerging Small World?
Sanjeev Goyal, Marco Van Der Leij, José Luis Moraga-Gonzàlez
The structures of social interaction affect individual behavior and economic performance in important ways. This leads us to ask: does the architecture of social interaction exhibit particular...
Goyal, Sanjeev, Moraga-Gonzalez, Jose Luis
We develop a model of strategic networks that captures two distinctive features of interfirm collaboration: bilateral agreements and nonexclusive relationships. Our analysis highlights the...
Collaboration and Competition in Networks
In a Cournot oligopoly, prior to choosing quantity, each firm has an opportunity to form pair-wise collaborative links with other firms. These pair-wise links lower costs of production of the firms...
original papers : A strategic analysis of network reliability
We consider a non-cooperative model of information networks where communication is costly and not fully reliable. We examine the nature of Nash networks and efficient networks. We find that if the...
research articles : Conformism and diversity under social learning
When there are competing technologies or products with unknown payoffs an important question is which technology will prevail and whether technologies with different payoffs can coexist in the long...
Sanjeev Goyal, Marcel Fafchamps, Marco J. Van Der Leij
This paper examines the existence and magnitude of network effects in the matching of workteams. We study the formation of co-author relations among economists over a thirty year period. Our...
Sanjeev Goyal, Alexander Konovalov, Jose Luis Moraga-Gonzalez
We develop a model of R&D competition and collaboration in which individual firms carry out independent in-house research and also undertake joint research projects with other firms. We examine the...
Learning in Networks: a survey
This paper presents a survey of research on learning with a special focus on the structure of interaction between individual entities. The structure is formally modelled as a network: the nodes of...
Network Formation with Heterogeneous Players
Andrea Galeotti, Sanjeev Goyal, Jurjen Kamphorst
This paper studies a connections model of network formation in which players are heterogeneous with respect to values as well as the cost of forming links. We start by showing that value...
Andrea Galeotti, Sanjeev Goyal
The law of the few refers to the following empirical phenomenon: in social groups a very small subset of individuals invests in collecting information while the rest of the group invests in forming...
A Theory of Strategic Diffusion
Andrea Galeotti, Sanjeev Goyal
The important role of friends, neighbors and colleagues in shaping individual choices has been brought out in a number of studies over the years. The presence of significant 'local' influence in...
Andrea Galeotti, Sanjeev Goyal
This paper considers a game played among players who seek to extract payoffs from a group of individuals subject to local interaction effects. We are interested in the relation between the network of...
Network Multipliers and the Optimality of Indirect Communication
Andrea Galeotti, Sanjeev Goyal
We study the problem of a firm M which wishes to inform a community of individuals about its product. Information travels within the community because of the social interactions between individuals....
Keeping up with the neighbours: social interaction in a market economy
Christian Ghiglino, Sanjeev Goyal
We consider a world in which individuals have private endowments and trade in markets, while their utility is sensitive to the consumption of their neighbors. Our interest is in understanding how...
Network formation and anti-coordination games
Yann Bramoullé, Dunia López-Pintado, Sanjeev Goyal, Fernando Vega-Redondo
We study a setting in which individual players choose their partners as well as a mode of behavior in 2×2 anti-coordination games – games where a player’s best response is to choose an action...
Sanjeev Goyal, José Luis Moraga-González, Alexander Konovalov
We develop a model of R&D collaboration in which individual firms carry out in-house research on core activities and undertake bilateral joint projects on non-core activities with other firms. We...
On the possibility of efficient bilateral trade
Bilateral bargaining, Learning, Ex post efficiency, C78, D82, D83,
Marcel Fafchamps, Marco Van Der Leij, Sanjeev Goyal
The matching of individuals in teams is a key element in the functioning of an economy. The network of social ties can potentially transmit important information on abilities and reputations and also...
Influencing the influencers: a theory of strategic diffusion
Andrea Galeotti, Sanjeev Goyal
The growth of the Internet and assorted technologies has made it possible to collect and process detailed information on social networks. This article investigates how firms (and governments) can...
Favoritism is the act of offering jobs, contracts and resources to members of one's social group in preference to outsiders. Favoritism is widely practiced and this motivates an exploration of its...