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Autor:innen: 
Erscheinungsjahr: 
2014
Quellenangabe: 
[Journal:] Theoretical Economics [ISSN:] 1555-7561 [Volume:] 9 [Issue:] 1 [Publisher:] The Econometric Society [Place:] New Haven, CT [Year:] 2014 [Pages:] 163-185
Verlag: 
The Econometric Society, New Haven, CT
Zusammenfassung: 
Each member of a group receives a signal about the unknown state of the world and decides upon a utility-maximizing recommendation on the basis of that signal. The individuals have identical preferences. The group makes a decision that maximizes the common utility function assuming perfect pooling of the information in individual signals. An action profile is a group action and a recommendation from each individual. A collection of action profiles is rational if there exists an information structure under which all elements in the collection arise with positive probability. With no restrictions on the information structure, essentially all action profiles are rational. In fact, given any distribution over action profiles it is possible to find an information structure that approximates the distribution. In a monotone environment in which individuals receive conditionally independent signals, essentially any single action profile is rational, although some collections of action profiles are not.
Schlagwörter: 
Statistical decision problem
group polarization
behavioral economics
psychology
forecasting
JEL: 
A12
D01
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