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Identification with Posterior-Separable Information Costs

Martin Bustos

arXiv 15 Feb 2024 · Econometrics

arXiv:2402.09789 · PDF · DOI · OpenAlex · Extracted main text

Abstract

I provide a model of rational inattention with heterogeneity and prove it is observationally equivalent to a state-dependent stochastic choice model subject to attention costs. I demonstrate that additive separability of unobservable heterogeneity, together with an independence assumption, suffice for the empirical model to admit a representative agent. Using conditional probabilities, I show how to identify: how covariates affect the desirability of goods, (a measure of) welfare, factual changes in welfare, and bounds on counterfactual market shares.

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appendix boundary found by appendix_titled_section at “Appendix A --Main proofs” · 66% of the source is main text. Read the extracted text to check this.