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Erscheinungsjahr: 
2010
Schriftenreihe/Nr.: 
Discussion Paper No. 1488
Verlag: 
Northwestern University, Kellogg School of Management, Center for Mathematical Studies in Economics and Management Science, Evanston, IL
Zusammenfassung: 
The paper introduces a notion of complementarity (substitutability) of two signals which requires that in all decision problems each signal becomes more (less) valuable when the other signal becomes available. We provide a general characterization which relates complementarity and substitutability to a Blackwell comparison of two auxiliary signals. In a setting with a binary state space and binary signals, we find an explicit characterization that permits an intuitive interpretation of complementarity and substitutability. We demonstrate how these conditions extend to more general settings.
Schlagwörter: 
Complementarity
substitutability
value of information
Blackwell ordering
JEL: 
C00
C44
D81
D83
Dokumentart: 
Working Paper

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