A large portion of our economic interactions involves a very small portion of the population. We seem to prefer familiar venues. But the tendency to focus our attention on a few individuals or activities is an attribute that is typically omitted in our characterization of markets. In markets...

Pragmatic decision makers adjust their view and their decisions to the state of the world. Ideological decision makers follow a guiding principle making decisions that do not change with circumstances. Either philosophy can be successful. This study explores a group of virtual agents, some of...

We tend to interact with same people, day after day. Might this affect our behavior? In an abstract fashion, we look at this question. To model this repeated interaction with a small subset of the entire population we place agents on the nodes of a network and have them play a prisoners’...