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We examine behavior in a three‐player trust game in which the first player may invest in the second and the second may invest in the third. Any amount sent from one player to the next is tripled. The third player decides the final allocation among three players. The baseline treatment with no communication shows that the first and second players send significant amounts and the third player reciprocates. Allowing insider communication between the second and the third players increases cooperation between these two. Interestingly, there is an external effect of insider communication: the first player who is outside communication sends 54% more and receives 289% more than in the baseline treatment. As a result, insider communication increases efficiency from 44% to 68%. (JEL...
This paper studies how groups resolve disagreement in lottery choices. In an experiment, subjects submit individual proposals, exchange chat messages, and must reach unanimity. Overall, group choices are more coherent and closer to risk neutrality than individuals'. The proposal of the minority prevails in about one instance out of five. About one third of the groups do not reach immediate agreement after communication. In these groups, extrovert subjects are more likely to lead the group outcome than confused or conscientious subjects. The amount, equality, and timing of chat messages help us to predict which choice prevails in the group....
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