The social world is often portrayed as being less predictable and more uncertain than the nonsocial world. People may therefore feel the need to search more for information before making a choice. However, we suggest that cognitive tools such as social projection and norm-based expectation may...

Motivating Examples -- Decision-Theoretic Framework -- Belief Operators -- Basic Characterizations -- Relaxing Completeness -- Backward Induction -- Sequentiality -- Quasi-Perfectness -- Properness -- Capturing forward Induction through Full Permissibility -- Applying Full Permissibility to...

We study a duel game in which each player has incomplete knowledge of the game parameters. We present a simple, heuristically motivated and easily implemented algorithm by which, in the course of repeated plays, each player estimates the missing parameters and consequently learns his optimal...

Using belief elicitation, the paper investigates the formation and the evolution of beliefs in a signalling game in which a common prior on Sender's type is not induced. Beliefs are elicited about the type of the Sender and about the strategies of the players. The experimental subjects often...