We run a laboratory experiment were friendship networks are generated endogenously within an anonymous group. Our experiment builds on two phases in sequence: a network formation game and a trust game. We find that in those sessions where the trust game is played before the network formation...

We run a computerised experiment of network formation where all connections are beneficial and only direct links are costly. Players simultaneously submit link proposals; a connection is made only when both players involved agree. We use both simulated and experimentally generated data to test...

In complete markets economies (Sandroni [15]), or in economies with Pareto optimal outcomes (Blume and Easley [9]), the market selection hypothesis holds, as long as traders have identical discount factors. Traders who survive must have beliefs that merge with the truth. We show that in...

This paper analyses the impact of the emergence of new funds on the portfolio decisions of mutual fund managers who are evaluated on the basis of relative performance within a dynamic model. Recent theoretical literature has pointed to the inefficiencies in portfolio selection caused by relative...

We analyze a market populated by expected utility maximizers and smooth ambiguity-averse consumers. We study conditions under which ambiguity-averse consumers survive and affect prices in the limit. If ambiguity vanishes with time or if the economy exhibits no aggregate risk, ambiguity-averse...

This paper provides a theoretical framework of endogenous network formation that yields testable predictions for the network architectures generated by a particular informal institution common in village economies. We test the implications of the model on data from rural Ethiopia. In contrast to...