exist a U-shaped relationship between equilibrium monopoly profits (or social welfare under both monopoly and duopoly) and … study investigates how competition may influence duopoly firms' incentive to voluntarily and truthfully reveal quality … information. It is shown that firms in competitive markets reveal less information than a monopoly firm does. In addition …

This paper analyzes dynamic advertising and pricing policies in a durable-good duopoly. The proposed infinite …-horizon model, while general enough to capture dynamic price and advertising interactions in a competitive setting, also permits … cumulative sales, while the optimal advertising is decreasing with cumulative sales. Comparative statics for the results are …