【题 目】Information Provision and Halo Effect of Food Labels: What Can Response Time Tell?
【时 间】2025年11月26日（星期三），14:00-15:30
【地 点】后主楼1710会议室
【主讲人】范肖丽 副教授（加拿大阿尔伯塔大学资源经济与环境社会学系）
【主持人】李亚男 副教授（欧洲杯 ）
摘要：
The halo effect of food labels occurs when labels lead consumers to infer superior health or quality attributes, especially for credence claims that cannot be directly verified, such as organic, grass fed, or animal welfare approved. Evidence on whether information provision mitigates this bias remains mixed. Using a nationally representative Canadian survey with an embedded discrete choice experiment, we examine whether information about beef label requirements reduces the halo effect and whether incorporating response time affects model estimates. Half of the participants were randomly assigned to receive detailed label information, and response times were recorded for all choice tasks. We estimate a hybrid choice model that integrates discrete choice models with latent variable models, in which response time is incorporated as the observable indicator of the latent construct for survey engagement. Our model allows taste and scale heterogeneity to be separated while avoiding endogeneity concerns present in models that directly use response time as an explanatory variable. Our results show that information provision reduces the halo effect, and that longer response times, which indicate greater cognitive effort, are associated with lower willingness to pay for credence labels. These findings suggest that more deliberate processing helps mitigate the halo effect of food labels.
报告人简介：
范肖丽现任加拿大阿尔伯塔大学资源经济与环境社会学系副教授。她于 2017 年在美国康奈尔大学获得应用经济学博士学位，在农业经济、消费者行为、农业技术采用以及畜牧业可持续发展等领域取得突出的学术成果。其研究成果多次发表在American Journal of Agricultural Economics、Food Policy、Canadian Journal of Agricultural Economics等农业经济领域权威期刊，以及Nature Human Behavior、Nature Scientific Data等跨领域高影响力期刊。范教授在学术服务中也做出了重要贡献，曾于2021-2024年担任加拿大农业经济学会理事，现担任Agribusiness: An International Journal期刊副编辑（Associate Editor）和Canadian Journal of Agricultural Economics期刊编委会成员（Editorial Board Member）。
