This paper studies a model of search engine competition with endogenous obfuscation. Platforms may differ in the quality of their search algorithms. I study the impact of this heterogeneity in consumer surplus, seller profits and platform revenue. I show that the dominant platform will typically...

Advertisements provide consumers with knowledge about private products, whereas political information is required to provide voters with knowledge of public issues. Modern information technologies and globalisation are increasing the exposure of individuals to information. Goods advertising is...

Within a one-shot, duopoly game, we show that firms cannot use false in-store price comparisons to deter rational consumers from further beneficial price search in an effort to create market power. However, by introducing a consumer protection authority that monitors price comparisons, we...

This paper studies the effect of increased competition in the product market on managerial incentives. I propose a simple model of career concerns where firms are willing to pay for managerial talent to reduce production costs, but also to subtract talented CEOs from competitors. This second...

In this paper explore the relationships between rivalry and geographical proximity at the very level of contacts between individual firms. In particular, we wish to highlight the influence of geographical proximity on rival identification, on the comparison of their knowledge, and on the...

In this paper, we present a simple model of information provision in competitive markets. We depart from previous literature in that we allow firms to choose both prices and information revelation policies. Under the assumption that the underlying state is binary, we show that in the unique...

We study when equilibrium prices can aggregate information in an auction market with a large population of traders. Our main result identifies a property of information—the betweenness property that is both necessary and sufficient for information aggregation. The characterization provides...

This paper analyzes how data-driven vertical integration between a platform and one downstream seller affects market outcomes in a two-sided market where sellers with asymmetric targeting skills target advertisements to individuals who have varying privacy concerns. I show that data-driven...

I show how changes in competition affect the power of reputation to induce sellers to exert effort. The impact of competition on sellers' incentives is theoretically ambiguous. More competition disciplines sellers, but, at the same time, it erodes reputational premia. This paper identifies...

I develop a formal model of political campaigns in which candidates choose how to distribute their resources over two different policy issues. I assume that campaigning on an issue has two simultaneous effects, both rooted in social and cognitive psychology: It increases the perceived quality of...