We analyze a dynamic principal-agent model where an infinitely-lived principal faces a sequence of finitely-lived agents who differ in their ability to produce output. The ability of an agent is initially unknown to both him and the principal. An agent's effort affects the information on ability...

This paper investigates a learning model in which information about a worker's ability, unobserved to both the worker and the firm, can be acquired in any period by both parties by observing the worker's performance at a given task. Tasks are differentially informative about productivity: more...

We consider a nonlinear pricing model, in which consumers' marginal willingness to pay and absolute ability to pay are noncontractible, to explain the nonlinearity of unit prices of basic food items (bulk discounting) in developing countries. We allow consumers to face binding budget-constraints...

In the Great Contraction, regions of the United States that experienced the largest change in household debt to income ratios also experienced the largest drops in output and employment. Such output drops not only occurred for firms that sell primarily to a local region but also for regional...

offered to players in Major League Baseball, focusing on hitters.

This paper examines the prices of basic staples in rural Mexico. We document that nonlinear pricing in the form of quantity discounts is common, that quantity discounts are sizable for basic staples, and that the well‐known conditional cash transfer program Progresa has significantly increased...