On the Internet, attackers can compromise systems owned by other people and then use these systems to launch attacks automatically. When attacks such as phishing or SQL injections are successful, they can have negative consequences including server downtime and the loss of sensitive information....

This dissertation uses game theoretic models to examine the effects of agent anonymity on markets for goods and for information. In open, anonymous settings, such as the Internet, anonymity is relatively easy to obtain --- oftentimes another email address is sufficient. By becoming anonymous,...

Contracting for research is often infeasible because research inputs are unobservable and research outcomes cannot be verified by a court. Sponsoring a research tournament can resolve these problems. A model is presented in which contestants compete to find the innovation of highest value to the...

The inferences a prospective home buyer can make about the quality of a house from the amount of time it spends on the market and the seller"s optimal strategy in light of these inferences are investigated. Depending upon the information structure, the seller may have an incentive to post an...

Two fundamentally different subcontracting systems arise as distinct solutions to the quality control problem facing an input buyer. The 'American' system involves competitive bidding on each contract, large orders, and inspections. The 'Japanese' system involves repeat purchases from a supplier...

I explore the practice of offering subscribers enticements to switch suppliers. This type of competition is natural in subscription markets for homogeneous goods and services. Efficiency is impaired because subscribers are induced to expend resources changing suppliers. Subscription markets are...

The determinants of bargaining power and price formation in a dynamic exchange market where new traders enter randomly over time are studied. When agents on the long side of the market possess the option to wait for the arrival of future partners, the terms of trade in the spot market must honor...

In this paper, we investigate two questions. First, we explore which entity (the NHTSA or the manufacturer) is more likely to initiate a given auto safety recall campaign. Second, we analyze the determinants of owner response rates to safety recalls. Our data spans nineteen years (1980-98) for...

We present a model in which a policymaker observes trade in a financial asset before deciding whether to intervene in the economy, for example by offering a bailout or monetary stimulus. Because an intervention erodes the value of private information, informed investors are reluctant to take...