A Method to Estimate Discrete Choice Models that is Robust to Consumer Search

Jason Abaluck and Giovanni Compiani

No 26849, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We state a sufficient condition under which choice data alone suffices to identify consumer preferences when choices are not fully informed. Suppose that: (i) the data generating process is a search model in which the attribute hidden to consumers is observed by the econometrician; (ii) if a consumer searches good j, she also searches goods which are better than j in terms of the non-hidden component of utility; and (iii) consumers choose the good that maximizes overall utility among searched goods. Canonical models will be biased: the value of the hidden attribute will be understated because consumers will be unresponsive to variation in the attribute for goods that they do not search. Under the conditions above and additional mild restrictions, an alternative method of recovering preferences using cross derivatives of choice probabilities succeeds regardless of the search protocol and is thus robust to whether consumers are informed. The approach nests several standard models, including full information. Our methods suggest natural tests for full information and can be used to forecast how consumers will respond to additional information. We verify in a lab experiment that our approach succeeds in recovering preferences when consumers engage in costly search.

JEL-codes: C5 C8 C9 D0 D6 D8 (search for similar items in EconPapers)
Date: 2020-03
New Economics Papers: this item is included in nep-dcm and nep-upt
Note: AG DEV ED EH IO LS PE TWP
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Citations: View citations in EconPapers (3)

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