We consider a sequential screening problem where, in the contracting stage, the agent has private information on both the expected value and the spread of the unit cost of production. As the principal’s marginal surplus function becomes less concave / more convex in consumption units,...

A multidimensional-and-sequential screening problem arises in a framework where the agent is privately informed about expected cost and cost variability and, subsequently, learns the realized cost as well. As the principal's marginal surplus function becomes less concave/more convex, the optimal...