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英文文献：Modeling Heterogeneity in Consumer Preferences for Select Food Safety Attributes in China-对中国消费者选择食品安全属性偏好的异质性进行建模
英文文献作者：Ortega, David L.,Wang, H. Holly,Wu, Laping,Olynk, Nicole J.
英文文献摘要：
Food safety issues often arise from problems of asymmetric information between consumers and suppliers with regards to product-specific attributes. Severe food safety scandals were observed recently in China that not only caused direct economic and life loss but also created distrust in the Chinese food system domestically as well as internationally. While much attention has focused on the problems plaguing the Chinese government’s food inspection system, little research has been dedicated to analyze consumers’ concerns over food safety. In this paper we measure consumer preferences for select food safety attributes in pork and take their food safety risk perceptions into account. Several choice experiment models, including latent class and random parameters logit, are constructed to capture heterogeneity in consumer preferences. A statistical sample of 6,720 observations is obtained from a choice experiment administered in seven major Chinese metropolitan cities. Our results suggest that Chinese consumers have the highest willingness-to-pay for a government certification program, followed by a traceability system, third party certification and a product-specific information label. The results of this study call upon the direct involvement of the Chinese government in the food safety system. A more strict monitoring system will not only improve consumer welfare in the short-run but also restore consumers’ trust leading to a social welfare increase in the long run.
食品安全问题往往产生于消费者和供应商之间关于产品特定属性的信息不对称问题。最近，中国出现了严重的食品安全丑闻，不仅造成了直接的经济和生命损失，还在国内和国际上造成了对中国食品体系的不信任。虽然很多注意力都集中在困扰中国政府食品检查系统的问题上，但很少有研究致力于分析消费者对食品安全的担忧。在本文中，我们测量了消费者对猪肉食品安全属性的选择偏好，并考虑了他们对食品安全风险的认知。建立了潜在类别和随机参数logit两种选择实验模型，以捕捉消费者偏好的异质性。通过在中国7个主要城市进行的选择实验，得到了6,720个观测值的统计样本。我们的研究结果表明，中国消费者最愿意为政府认证项目付费，其次是可追溯系统、第三方认证和特定产品信息标签。这项研究的结果呼吁中国政府直接参与食品安全体系。一个更加严格的监督制度不仅在短期内会改善消费者的福利，而且从长远来看也会恢复消费者的信任，从而增加社会福利。
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