A principal has a stochastically evolving target that he wishes an agent to repeatedly hit with his effort. The agent does not obtain utility from hitting the target and therefore attempts to shirk; the agent's utility is determined by a second process that symmetrically is of no use to the...

type="main" <p>We characterize a duopoly buffeted by demand and cost shocks. Firms learn about shocks from common observation, private observation, and noisy price signals. Firms internalize how outputs affect a rival's signal, and hence output. We distinguish how the nature of information...</p>

I present a model in which a continuum of individuals have stochastic idiosyncratic income shocks. Complete insurance is physically feasible but unattainable due to an information asymmetry; income shocks are observable only by the individuals receiving them. Any insurance institution must...