How we can understand human behavior (rationality, semi-rationality, bounded rationality, and just plain irrationality) in day-to-day behaviors, and in particular in electronic environments.

The standard model of labor in economics assumes that work is aversive and that the employer, therefore, has to pay the employees money to …

The placebo effect is not limited to sugar pills in clinical trials of medications. In fact, placebos are a specific example of the affect …

Americans have a negative personal savings rate; this indicates budgeting and saving can be very hard to do�money is abstract, fungible, an…

Because of rising energy costs, of considerable interest in many parts of the world is the smart energy meter: a tool to let consumers know…

Economic theories of valuation generally assume that prices of commodities and assets are derived from underlying "fundamental" values. For…

Money is a wonderful invention. It lets people specialize, save, and trade. At the same time, money is very abstract, making it very hard t…

We have designed an online algorithm to approximate maximum welfare in selling adwords when click-through rates are unknown. This algorithm…

One of the defining characteristics of online auctions is the information bidders can get from other bidders during the process. In the cur…

Conversion rates (ratio of visitors to buyers) on the Internet are amazingly low. In our current work, we suggest that one of the most note…

Click fraud is an important problem plaguing online advertisers. A click fraud is an attempt by an agency (such as a competitor) to increas…

The standard model of of human behavior is a model of rational actors. This model is widely accepted by individuals, policy makers, and bus…

As online auctions become more popular, it is important to understand better the process by which people set their bids and the factors tha…

Agents (human or computer) provide their users with recommendations. This project investigates whether the type of agent making the recomme…

Dating practices have been indelibly marked by the pace and communication opportunities available online. We are examining this phenomenon …

Some auction sites have "deterministic-ending" rules, which means the auction ends at a known time. Other auction sites have "contingent-en…

This project explores ways to use images as qualitative data for health maintenance/improvement. Currently, many health patients (such as d…

Providing people with information about their own physical state has been used for a long time under the general term "bio-feedback." In th…

Smart agents represent users by creating models of particular users, and the agents' recommendations are based on these models. But models …