This paper surveys models of markets in which only some consumers are "savvy". I discuss when the presence of savvy consumers improves the deals available to all consumers in the market (the case of search externalities), and when the non-savvy fund generous deals for all consumers (ripoff...

Politik hat vielfach zum Ziel, das Verhalten von Wirtschaftssubjekten durch eine Veränderung der Rahmenbedingungen zu steuern. Bei der Politikfolgenabschätzung müssen deshalb Voraussagen gemacht werden, wie Menschen sich an veränderte ökonomische Bedingungen anpassen. Eine wichtige...

This paper investigates the effects of a limited consumer memory on the price competition between firms. It studies a specific aspect of memory--namely, the categorization of available price information that the consumers may need to recall for decision making. This paper analyzes competition...

This paper surveys models of markets in which some consumers are "savvy" while others are not. We discuss when the presence of savvy consumers improves the deals available to non-savvy consumers in the market (the case of search externalities), and when the non-savvy fund generous deals for...

We extend the analysis of monopoly third-degree price discrimination to the empirically important case where marginal costs also differ between markets. Differential pricing then reallocates output to the lower-cost markets, hence welfare can increase even if total output does not, unlike under...

This paper surveys models of markets in which some consumers are "savvy" while others are not.  We discuss when the presence of savvy consumers improves the deals available to non-savvy consumers in the market (the case of search externalities), and when the non-savvy fund generous deals for...

This paper develops a model of competitive price discrimination with horizontal and vertical differentiation. The main application is to add-on pricing – advertising low prices for one good in hopes of selling additional products at high prices. Price discrimination is self-reinforcing: the...

This paper discusses complementarities and tensions between competition policies and consumer protection policies. The paper argues that markets will often supply adequate customer protection without the need for extra public intervention. Special areas where intervention might be needed are...