Fun site with links to articles on many learning theories including Piaget, Constructivism, Behavioralism, Brain Based Learning, Social Cognition, Emotional Inteligence, Social Learning Theory, and more.
E. Ferrante, A. Lazaric, and M. Restelli. Proceedings of the 7th international joint conference on Autonomous agents and multiagent systems - Volume 3, International Foundation for Autonomous Agents and Multiagent Systems, Richland, SC, (2008)