In the last ten years theory (e.g., Fudenberg and Levine, 1998) and empirical data fitting have provided many ideas about how equilibria arise in games or markets. This short chapter describes a very general approach to learning in games: "experience-weighted attraction" (EWA) learning. This...

The possibility that asset markets could be strategically manipulated by large informed traders has fascinated social scientists and market observers for years. There is a well-known story of minions of Nathan Rothschild, who was thought to have the fastest carrier pigeons in London, selling...