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Journal of Political Economy Vol. 113 No. 6 2005

Demand Estimation with Heterogeneous Consumers and Unobserved Product Characteristics: A Hedonic Approach

Patrick Bajari1; C. Lanier Benkard1,2

1 National Bureau of Economic Research · 2 Stanford University

Abstract

We reconsider the identification and estimation of Gorman‐Lancaster‐style hedonic models of demand for differentiated products in the spirit of Sherwin Rosen. We generalize Rosen’s first stage to account for product characteristics that are not observed and to allow the hedonic pricing function to have a general nonseparable form. We take an alternative semiparametric approach to Rosen’s second stage in which we assume that the parametric form of utility is known, but we place no restrictions on the aggregate distribution of utility parameters. If there are only a small number of products, we show how to construct bounds on individuals’ utility parameters, as well as other economic objects such as aggregate demand and consumer surplus. We apply our methods to estimating the demand for personal computers.

DOI
10.1086/498586
Volume
113
Issue
6
Pages
1239-1276
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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