Document Type
Discussion Paper
Publication Date
8-1-2009
CFDP Number
1718
CFDP Revision Date
2010-03-01
CFDP Pages
42
Abstract
We consider identification of nonparametric random utility models of multinomial choice using “micro data,” i.e., observation of the characteristics and choices of individual consumers. Our model of preferences nests random coefficients discrete choice models widely used in practice with parametric functional form and distributional assumptions. However, the model is nonparametric and distribution free. It allows choice-specific unobservables, endogenous choice characteristics, unknown heteroskedasticity, and high-dimensional correlated taste shocks. Under standard “large support” and instrumental variables assumptions, we show identifiability of the random utility model. We demonstrate robustness of these results to relaxation of the large support condition and show that when it is replaced with a weaker “common choice probability” condition, the demand structure is still identified. We show that key maintained hypotheses are testable.
Recommended Citation
Berry, Steven T. and Haile, Philip A., "Nonparametric Identification of Multinomial Choice Demand Models with Heterogeneous Consumers" (2009). Cowles Foundation Discussion Papers. 2037.
https://elischolar.library.yale.edu/cowles-discussion-paper-series/2037