There is a growing debate on whether food establishment hygiene inspections are effective. Drawing on the Kano model, hygiene may be a ‘satisfier’ but may not be a ‘delighter,’ and therefore consistent with recent research, high-scoring food establishments will have a limited incentive to improve their hygiene score. However, based on the Kano model, focus on ‘satisfiers’ would be necessary before focusing on ‘delighters’, therefore, we expect that food establishments with lower hygiene scores improve their scores over time. Taking a Bayesian learning framework, we find that food establishments in Los Angeles do not improve their hygiene scores over time and do not find differences in learning for food establishments with grades B or below. Due to limited motivation even for low-scoring food establishments to improve their scores, the Kano model on hygiene scores as ‘satisfier’ may not be supported for lower-scoring food establishments.

关于食品企业卫生检查是否有效的争论越来越多。根据卡诺模型，卫生可能是“满意的”，但可能不是“愉悦的”，因此，与最近的研究一致，高分食品企业提高卫生得分的动机有限。但是，基于Kano模型，在关注“愉悦者”之前，有必要先关注“满意者”，因此，我们希望卫生评分较低的食品企业会随着时间的推移而提高其得分。在贝叶斯学习框架下，我们发现洛杉矶的食品企业没有随着时间的推移而改善其卫生评分，也没有发现对B级或以下食品企业的学习差异。由于动机有限，即使是分数较低的食品企业也无法提高得分，