We develop a model of contests on networks. Each player is “connected” to a set of contests and exerts a single effort to increase the probability of winning each contest to which she is connected. We characterize equilibria under the Tullock contest success function and explore how behavior...

We study the optimal design of an innovation contest where the designer wants to induce product variety and faces a moral hazard problem. The innovators have different areas of expertise and may differ in their flexibility to adopt approaches outside their specialties. When the suppliers are...