We study the offering of discretionary services, those for which longer processing times yield higher quality, but also create more system congestion. Facing delay-sensitive customers that are heterogeneous in quality sensitivity, firms offer a service line (i.e., a menu of service variants...

I study the properties of optimal long-term contracts in an environment in which the agent's type evolves stochastically over time. The model stylizes a buyer-seller relationship but the results apply quite naturally to many contractual situations including regulation and optimal...

Incorporation of expert information in inference or decision settings is often important, especially in cases where data are unavailable, costly or unreliable. One approach is to elicit prior quantiles from an expert and then to fit these to a statistical distribution and proceed according to...