NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Rationally Inattentive Behavior: Characterizing and Generalizing Shannon Entropy

Andrew Caplin, Mark Dean, John Leahy

NBER Working Paper No. 23652
Issued in August 2017
NBER Program(s):Economic Fluctuations and Growth

We provide a full behavioral characterization of the standard Shannon model of rational inattention. The key axiom is "Invariance under Compression", which identifies this model as capturing an ideal form of attention-constrained choice. We introduce tractable generalizations that allow for many of the known behavioral violations from this ideal, including asymmetries and complementarities in learning, context effects, and low responsiveness to incentives. We provide an even more general method of recovering attention costs from behavioral data. The data set in which we characterize all behavioral patterns is "state dependent" stochastic choice data.

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Document Object Identifier (DOI): 10.3386/w23652

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