We characterize the product line choice and pricing of a monopolist as the upper envelope of net marginal revenue curves to the individual product demand functions. The equilibrium product varieties to include in a product line are those yielding the highest upper envelope. In a central case...

We extend the persuasion game to bring it squarely into the economics of advertising. We model advertising as exciting consumer interest into learning more about the product, and determine a firm's equilibrium choice of advertising content over quality information, price information, and...

Empirical evidence suggests that most advertisements contain little direct information. Many do not mention prices. We analyse a monopoly firm’s choice of advertising content and the information disclosed to consumers. The firm advertises only product information, price information, or both;...