The random parameters logit model for aggregate data introduced by Berry, Levinsohn, and Pakes (1995) has been a driving force in empirical industrial organization for more than a decade. While these models are identified in theory, identification problems often occur in practice. In this paper...

Newspaper Joint Operating Agreements (JOAs) are long term, inflexible contracts between metropolitan daily newspapers in the same market. These contracts maintain two editorial voices while combining all business operations of the two competitors in order to capture many of the scale economies...