Before 1978, most of the U.S. domestic copper production and an important fraction of the imports were traded at a price set by the major U.S. producers. Simultaneously, the rest of the world was trading copper at prices determined in auction markets. This two-price system ended in 1978, when...

Since Telser (1960), there is a well-established argument that a competitive market will not provide service due to free-riding. We show that with search frictions, the market may well provide service if the cost of doing so is not too large. Any market equilibrium with service provision has two...

We study a consumer non-sequential search oligopoly model with search cost heterogeneity. We first prove that an equilibrium in mixed strategies always exists. We then examine the nonparametric identification and estimation of the costs of search. We find that the sequence of points on the...

In this paper, we emphasize that choice sets generated by a search process have two properties: first, they are limited; second, they are endogenous to preferences. Both factors lead to biased estimates in a static demand framework that takes choice sets as given. To correct for this bias, we...

Search frictions are regarded as a major impediment to active competition in many markets. In some markets, such as financial and retail gasoline, governments and consumer protection agencies call for compulsory price reporting. Consumers could then more easily compare the firms' offers. We...

Search frictions are classified as a main impediment to active competition in many markets. In some markets, such as in financial and retail gasoline markets, governments and consumer protection agencies call for a compulsory price reporting. Consumers should then more easily compare the firms'...

I estimate demand for auto insurance in the presence of two types of market frictions: search and switching costs. I develop an integrated utility-maximizing model in which consumers decide over which and how many companies to search and from which company to purchase. My modeling approach...

How does advertising influence consumer decisions and market outcomes? We utilize detailed data on consumer shopping behavior and choices over bank accounts to investigate the effects of advertising on the different stages of the shopping process: awareness, consideration, and choice. We...

We study the identification of the search method consumers use when resolving uncertainty in the prices of alternatives. We show that the search method -- simultaneous or sequential -- is identified with data on consumers' consideration sets (but not the sequence of searches), prices for the...

In this paper we present a general approach and methodology for modelling concentration dynamics on industrial level. The majority of research in this field has usually been focused on estimating adjustment models, where the speed of adjustment of actual level of concentration to the long-run...