文章基本信息

标题：Comparing models of unobserved heterogeneity in environmental choice experiments
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作者：Kragt, Marit E.
期刊名称：Journal of Food Distribution Research
印刷版ISSN：0047-245X
出版年度：2013
出版社：Food Distribution Research Society
摘要：Choice experiments have become a widespread approach to non-market environmental valuation. Given the vast range of public opinions towards environmental management changes, it is desirable that analysis of discrete choice data accounts for the possibility of unobserved heterogeneity amongst the population. There is, however, no consensus about the best way to model individual heterogeneity. This paper presents four approaches to modelling heterogeneity that are increasingly used in the literature. Latent class, mixed logit, scaled multinational logit and generalised mixed logit (GMXL) models are estimated using case study data for catchment environmental management in Australia. A GMXL model that accounts for preference and scale heterogeneity performs best. I evaluate the impacts of models on welfare estimates and discuss the merits of each modelling approach.
关键词：Choice Modelling;Econometrics;Random Parameters;Scale Heterogeneity;Unobserved Preference Heterogeneity