This paper analyzes optimal product lines when consumers differ both in their taste for quality and in their desire for social image. The market outcome features partial pooling and product differentiation that is not driven by heterogeneous valuations for quality but by image concerns. A...

This essay considers the role of reputational information in our marketplace. It explains how well-functioning marketplaces depend on the vibrant flow of accurate reputational information, and how misdirected regulation of reputational information could harm marketplace mechanisms. It then...

Repeat transactions are not necessarily the rule in today's global economy. Indirect reputation systems, where buyers base their decisions on a seller's previous interactions with other buyers, are a potential substitute for personal interactions - provided such information is available. This...

Many believe that consumer-sourced reputational information about products would increasingly replace top-down regulation. Instead of protecting consumers through coercive laws, reputational information gleaned from the wisdom of the crowd would guide consumer decision making. There is now a...

This paper investigates the incentives of a credit rating agency (CRA) to generate accurate ratings under an advertisement-based business model. To this end, we study a two-period endogenous reputation model in which a CRA can increase the precision of its ratings by exerting effort. The CRA...

When grades lose their informative value because the percentage of students receiving the best grade rises without any corresponding increase in ability, this is called grade inflation. Conventional wisdom says that such grade inflation is unavoidable since it is essentially costless to award...

Freelancers face cold-start problems in online labor markets: getting hired is very difficult without ratings, while obtaining a rating is impossible unless already having been hired. According to economic theory and empirical evidence, advertising can serve as a signal of product quality for...

It is commonly believed that borrowers cannot be anonymous in unsecured credit relations because anonymity heavily reduces the scope for punishment and therefore makes credit unfeasible except for very special circumstances. However, we demonstrate that credit is generally feasible even if...

We study the impact of reputational incentives in markets characterized by moral hazard problems. Social preferences have been shown to enhance contract enforcement in these markets, while at the same time generating considerable wage and price rigidity. Reputation powerfully amplifies the...

We study the effects of preselection on an expert's incentive to give truthful advice. In a decision environment in which certain decisions yield more precise estimates about the expert's expertise, a mediocre expert's advice is biased. We show that this bias can be undone by the introduction of...