We analyze the contracting problem between a shopping mall and potential anchors (large stores) in a market where consumers with high search costs must choose shopping destinations prior to learning prices. Our model incorporates the interaction between contracting and asymmetric firm sizes into...

This paper estimates a dynamic model of user behavior in a social network site using unique data on the daily login activity of a sample of members of MySpace.com. We view a social network as a stock of capital that yields a flow of utilities over time by creating interactions between the site...

We analyze the contracting problem between a shopping mall and potential anchors (large stores) in a market where consumers with high search costs must choose shopping destinations prior to learning prices. Our model incorporates the interaction between contracting and asymmetric firm sizes into...

In Chapter 1, I analyze a setting where a pair of retailers which sell unrelated products at the same location (e.g., a strip mall) compete with other retailers located at a different strip mall across town by jointly introducing a bundling discount while independently setting their respective...

We study the role of store-format choices in dynamic competition between two major chains in the U.S. discount-store industry. The aim is to measure the effect on Kmart profits of Walmart Supercenters, which combine a full-service grocery with a regular discount store. The data are a six-year...

We study the relationship between innovation and horizontal differentiation in a continuous-time dynamic duopoly. At any instant firms compete in prices in a Hotelling game. They may be differentiated both in terms of product quality (for which consumers have homogeneous tastes) and product...

I study competition in product ranges between firms selling differentiated varieties of a product to consumers who use sequential search to collect information about prices and tastes for the available varieties. Competition in product ranges is recast as a competition in providing availability...

I use an original dataset on the display inventories of several hundred eyewear retailers to study how firms' product-range choices depend on separation from rivals in geographically-differentiated markets. A two-stage estimation approach is used to model firms' initial location decisions and...

I analyze an original dataset on the display inventories of several hundred eyewear retailers to study how firms' product-range choices depend on separation from rivals in geographically-differentiated markets. A two-stage estimation approach is used to model firms' initial location decisions...