People are less likely to make moral decisions when they are in groups. I study when this phenomenon makes groups less likely to produce a morally desirable outcome than one individual alone. I formulate and test a model in which a moral outcome occurs if at least one individual makes a costly...

The need for efficient coordination is ubiquitous in organizations and industries. The literature on the determinants of efficient coordination has focused on individual decision-making so far. In reality, however, teams often have to coordinate with other teams. We present an experiment with...

We use a laboratory gift-exchange game to examine decisions made by groups under three different procedures that dictate how group members interact and reach decisions in comparison to individuals acting alone. We find that group decisions do deviate from those of individuals, but the direction...

We examine the investment decision problem of a group whose members have heterogeneous time preferences. In particular, they have different discount factors for utility, possibly not exponential. We characterize the properties of efficient allocations of resources and of shadow prices that would...

Transgressions and injustice are an inevitable part of social life, both in interactions between individuals and between groups. But whereas conflict between individuals typically impacts only few, conflict between groups can be harmful to many – as is illustrated by disputes between nations,...

Many important intertemporal decisions are made by groups rather than individuals. What happens to collective decisions when there is internal conflict about the tradeoff between present and future has not been thoroughly investigated so far. We study experimentally the causal effect of group...

At the July video conferencing meeting of the IEA’s Shadow Monetary Policy Committee (SMPC), the vote was seven to two to raise the bank rate. Six members wanted it increased to 0.25% immediately and one to 0.5%. Two members, however, voted to leave it at its current level of 0.1% for the time...

This paper considers a situation in which students with heterogeneous ability types are grouped into different competitions for performance ranking. A planner can group the students and design prize structure in each competition in order to maximize the weighted total performance subject to a...

People who are members of a group and identify with it behave differently from people who perceive themselves as isolated individuals. This difference depends on two main factors. First, preferences over outcomes change with the degree of identification with the group. Second, this...