I have worked on justifying different types of imitative behavior. "Why Imitate?" (published) is the first paper that shows that a particular form of imitation can efficienty aggregate information. "Which one?" and "Imitate Best vs" show what to do when more than one are observed.


Imitation and Social Learning (joint with Carlos Allos Ferrer), The Handbook of Rational and Social Choice, P. Anand, P. Pattanaik and C. Puppe (eds.), Oxford University Press (2009), chapter 11, 271-297.

Which One Should I Imitate? Journal of Mathematical Economics 31(4) (1999), 493–522.

Why Imitate, and if so, How? A Boundedly Rational Approach to Multi-Armed Bandits, Journal of Economic Theory 78(1) (1998), 130–156.

Working Papers:

Social Learning Between Groups: Imitation and the Role of Experience (Papier zur Antrittsvorlesung), 2011

Imitation and Minimax Regret, Mimeo, 2004.

Updating Strategies Through Observed Play - Optimization Under Bounded Rationality (joint with C. Cressman), April 1998

On the Evolution of Imitative Behavior (joint with Jonas Björnerstedt), Discussion Paper No. B–-378, Sonderforschungsbereich 303, University of Bonn, 1996.

Imitate Best ’vs ‘Imitate Best Average’, University of Bonn, 1996.

Imitation and Social Learning, May 2011