This paper presents a game-theoretic model of network formation, which allows agents to enter bilateral alliances and to extract payoffs from enemies. Each pair of agents creates a surplus of one, which allies divide in equal parts. If agents are enemies, then the agent with more allies obtains...

We investigate the role of networks of military alliances in preventing or encouraging wars between groups of countries. A country is vulnerable to attack if there is some fully-allied group of countries that can defeat that country and its (remaining) allies based on a function of their...

We implement an experimental design based on a duopoly game in which subjects choose whether to cooperate in Research and Development (R&D) activities. We first conduct six experimental markets that differ in both the levels of knowledge spillovers and the intensity of competition. Consistently...

We develop a model of endogenous network formation in order to examine the incentives for R&D collaboration in a mixed oligopoly. Our analysis reveals that the complete network, where each firm collaborates with all others, is uniquely stable, industry-profit maximizing and efficient. This...

We study the impact of research collaborations in coauthorship networks on research output and how optimal funding can maximize it. Through the links in the collaboration network, researchers create spillovers not only to their direct coauthors but also to researchers indirectly linked to them....

We look at syndication in the venture capital industry. Investments conducted by syndicates are believed to have better chances of being successful, measured by the survival probability of portfolio companies or by successful exits. Using a novel and large dataset, covering several countries,...