The extent of pharmaceutical advertising and promotion can be characterized by a balancing act between profitable … of competition (e.g. monopoly versus oligopoly). In this paper we model the firm's behavior under different competitive … scenarios and test the model's predictions using a novel combination of sales, promotion, advertising, and adverse event reports …

In this paper, we explore the hypothesis that an important force behind the collapse in advertising revenue experienced … introduce a model of the market for advertising on news media outlets whereby news outlets are modeled as competing two … equilibrium outcomes in the advertising market. One consequence is that multi-homing on the part of advertisers is heterogeneous …

corresponding new measures of industry competition where firms can have their own distinct set of competitors. Our new sets of … industry competitors better explain specific discussion of high competition by management, rivals identified by managers as … evidence that firm R&D and advertising are associated with subsequent differentiation from competitors, consistent with …

impact of competition on information revelation is ambiguous in general. We identify a condition on the information …

Open borders imply systems competition. This paper studies the implications of systems competition for the national … competition rules. It is shown that an equilibrium where all countries retain their antitrust laws does not exist, since …

emphasize that a key dimension to this competition is the innovations that lead to product differentiation and quality … improvement. In a duopoly model with a single adoption choice, we derive endogeneously the level and diversity of product …