We consider an adverse selection model in which the agent can gather private information before the principal offers the contract. There are two scenarios. In scenario I, information gathering is a hidden action, while in scenario II, the principal observes the agent's information gathering...

This paper examines equilibrium and welfare in a tractable class of economies with externalities, strategic complementarity or substitutability, and incomplete information. In equilibrium, complementarity amplifies aggregate volatility by increasing the sensitivity of actions to public...

This paper analyzes the effect of information spillover in a multi-good adverse selection model where a privately informed seller simultaneously trades two different goods with different buyers. In this setting, buyers not only learn the seller's information from past trading outcomes in the...

Whom should an interest group lobby in a legislature? I develop a model of informational lobbying in which a legislature must decide on the allocation of a local publicly-provided good across districts. An interest group chooses sequentially to search and provide information on districts'...

We derive closed-form strategies for a broker who provides liquidity to an informed trader and to a noise trader over a finite-time and infinite-time trading horizon. The flow of the noise trader is uninformative and the broker trades with the noise trader at a profit, on average. On the other...

This paper considers Bayesian and Nash implementation in exchange economic environments with state dependent preferences and feasible sets. We fully characterize Bayesian implementability for both diffuse and non-diffuse information structures. We show that, in exchange economic environments...

When a principal’s monitoring information is private (non-verifiable), the agent should be concerned that the principal could misrepresent the information to reduce the agent’s wage or collect a monetary penalty. Restoring credibility may lead to an extreme waste of resources - the so-called...

I discuss the role of intermediaries that search out the information of privately informed parties and then choose what to reveal to uninformed parties. The focus is on the strategic manipulation of information by these certification intermediaries. I show that in a class of environments the...

We examine the strategic non-revelation of information by patent applicants. In a model of a bilateral search of information, we show that patent applicants may conceal information, and that examiners make their screening intensity contingent upon the received information. We then analyze the...