We study the impact of team decision making on market behavior and its consequences for subsequent individual performance in the Wason selection task, the single-most studied reasoning task. We reformulated the task in terms of "assets" in a market context. Teams of traders learn the task's...

Collective decision making seems a straightforward matter: people come together and decide. But why is it that today's winners can turn into tomorrow's losers? Why can't you always get what you want? How does the interaction between the decision makers influence the outcome? And are opportunists...

We study the choice of a principal to either delegate a decision to a group of careerist experts, or to consult them individually and keep the decision-making power. Our model predicts a trade-off between information acquisition and information aggregation. On the one hand, the expected benefit...