I develop a simple new model of strategic trade with endogenous timing, generalizaing Glosten and Milgrom (1985) : A competitive market maker faces n risk neutral traders with unit demands or suppliers. It is private information whether any given trader is either informed, with a heterogeneous...

We explore the constrainned efficient observational learning model - as when individuals care about successors, or are so induced by an informationally- constrained social planner. We find that when the herding externality is correctly internali zed in this fashion, incorrect herds still obtain.

This paper develops necessary and sufficient conditions for monotone comparative statics predictions in several general classes of stochastic optimization problems. There are two main results, where the first pertains to single crossing properties (of marginal returns, incremental returns, and...

Traditional Trade models focus on aggregate and industry flows and usually ignore firm level factors. This paper presents a dynamic model of the export decision by a profit-maximizing firm.