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英文文献：Food Safety and Spinach Demand: A Shock Correction Model-食品安全与菠菜需求:一个冲击修正模型
英文文献作者：Arnade, Carlos Anthony,Calvin, Linda,Kuchler, Fred
英文文献摘要：
Conventional Error Correction Models estimate the adjustment rate to all components of econometric errors. In this paper we estimate the response to a specific large error and investigate if the adjustment rate to a particular disequilibrium shock was distinct. We examine demand for leafy green vegetables, accounting for the 2006 U.S. Food and Drug Administration announcement that consumers should not eat spinach as it was a possible cause of an ongoing multi-state foodborne illness outbreak due to E-coli. If consumers initially responded to the government warning as if risks were significant but gradually realized that risk levels were negligible, the adjustment back to pre-announcement behavior could be considered a correction. Here, we develop a model of consumer behavior where consumers correct both for past errors and for any errors in their reaction to the shock. This method provides estimates of the rates of adjustment to the government announcement.
传统的误差修正模型估计经济计量误差的所有组成部分的调整率。在本文中，我们估计了对一个特定大误差的响应，并研究了对一个特定非平衡冲击的调整率是否明显。我们调查了对绿叶蔬菜的需求，2006年美国食品和药物管理局宣布消费者不应该吃菠菜，因为它可能是由大肠杆菌引起的持续多州食源性疾病爆发的一个原因。如果消费者最初对政府警告的反应好像风险很大，但逐渐意识到风险水平可以忽略不计，那么调整回到公告前的行为可以被认为是一种修正。在这里，我们建立了一个消费者行为模型，在这个模型中，消费者可以纠正过去的错误以及他们对冲击反应中的任何错误。此方法提供对政府公告调整率的估计。
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