We investigate the dynamic relationship between advertising and product quality under duopolistic competition. By using a simplified vertical product differentiation model with voluntary advertising, we show that the firm with larger market share has a larger advertising share and that there is...

In this study, we analyze a dynamic duopoly game in which firms can use advertising and price as competitive tools. The market is assumed to be completely covered in the sense that all consumers purchase a product from one of the two firms. We assume that advertising creates a positive...

Voracious behavior is one of the excess uses of the commons. It is known that the voracity effect can be observed in the economy with common and private capital. We explore another cause of voracious behavior and investigate the effects of voracious behavior on the economy. For this purpose, we...