Skip to main content

STICERD Econometrics Seminar Series

Nonlinear Random Coefficients and Preference Heterogeneity

Arthur Lewbel (Boston College)

Thursday 16 February 2017 14:00 - 15:30

Due to the onging coronavirus outbreak, many of our seminars and public events this year will continue as online seminars. Please check our website listings and Twitter feed @STICERD_LSE for updates.

About this event

Standard random coefficients models are either linear in regressors, or equal a transformation of a linear index of regressors (e.g., random coefficient logit models). In contrast, this paper shows identification of, and consistent estimators for, general nonlinear random coefficients models with unknown parameters. For example, we consider a model that includes interaction terms in regressors and nonlinear transformations of regressors, where each regressor has a random coefficient, and the joint distribution of the random coefficients is unknown. We then model unobserved preference heterogeneity in consumer demand as utility functions with random Barten scales. These Barten scales appear as random coefficients in nonlinear demand equations. Using Canadian data, we compare estimated energy demand functions with and without random Barten scales. We find that unobserved preference heterogeneity substantially affects the estimated consumer surplus costs of an energy tax.

STICERD Econometrics seminars are held on Thursdays in term time at 14.00-15.30, ONLINE, unless specified otherwise.

Seminar organisers: Professor Tai Otsu and Dr. Vassilis Hajivassiliou.

For further information please contact Lubala Chibwe, either by email:

Please use this link to subscribe or unsubscribe to STICERD Econometrics mailing list (emetrics).