NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Joint Identification of Utility and Discount Functions From Stated Choice Data: An Application to Durable Goods Adoption

Jean-Pierre H. Dube, Günter J. Hitsch, Pranav Jindal

NBER Working Paper No. 18393
Issued in September 2012
NBER Program(s):   IO

We present a survey design that generalizes static conjoint experiments to elicit inter-temporal adoption decisions for durable goods. We show that consumers' utility and discount functions in a dynamic discrete choice model are jointly identified using data generated by this specific design. In contrast, based on revealed preference data, the utility and discount functions are generally not jointly identified even if consumers' expectations are known. The separation of current-period preferences from discounting is necessary to forecast the diffusion of a durable good under alternative marketing strategies. We illustrate the approach using two surveys eliciting Blu-ray player adoption decisions. Both model-free evidence and the estimates based on a dynamic discrete choice model indicate that consumers make forward-looking adoption decisions. In both surveys the average discount rate is 43 percent, corresponding to a substantially higher degree of impatience than the rate implied by aggregate asset returns. The estimates also reveal a large degree of heterogeneity in the discount rates across consumers, but only little evidence for hyperbolic discounting.

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Document Object Identifier (DOI): 10.3386/w18393

Published: Quantitative Marketing and Economics December 2014, Volume 12, Issue 4, pp 331-377 Date: 10 Sep 2014 The Joint identification of utility and discount functions from stated choice data: An application to durable goods adoption Jean-Pierre Dubé, Günter J. Hitsch, Pranav Jindal

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