Identification in Differentiated Products Markets
Steven Berry () and
No 21500, NBER Working Papers from National Bureau of Economic Research, Inc
Empirical models of demand for–and, often, supply of–differentiated products are widely used in practice, typically employing parametric functional forms and distributions of consumer heterogeneity. We review some recent work studying identification in a broad class of such models. This work shows that parametric functional forms and distributional assumptions are not essential for identification. Rather, identification relies primarily on the standard requirement that instruments be available for the endogenous variables–here, typically, prices and quantities. We discuss the kinds of instruments needed for identification and how the reliance on instruments can be reduced by nonparametric functional form restrictions or better data. We also discuss results on discrimination between alternative models of oligopoly competition.
JEL-codes: C3 C35 C36 C52 C57 D12 D22 D43 L13 (search for similar items in EconPapers)
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Published as Steven Berry & Philip Haile, 2016. "Identification in Differentiated Products Markets," Annual Review of Economics, Annual Reviews, vol. 8(1), pages 27-52, October.
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Journal Article: Identification in Differentiated Products Markets (2016)
Working Paper: Identification in Differentiated Products Markets (2015)
Working Paper: Identification in differentiated product markets (2015)
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