In a review of “Economics at the FTC,” Farrell et al. (2011) discuss empirical methods FTC economists use to assess the potential price effects of prospective hospital mergers. The primary method is a framework based on proxies for the bargaining power of hospitals that are calculated from...

We develop a methodology that quantifies from data on itinerary demand consumers' valuations of the characteristics of airline networks, and show that airline network effects are highly valued. We show that these effects are crucial for determining consumer impacts of public policies that affect...