A new year, a new you? Within-individual variation in food purchases
A new year, a new you? Within-individual variation in food purchases
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DOI：
10.1016/j.euroecorev.2020.103478
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发表时间：
2020-08-01
影响因子：
2.8
通讯作者：
Vermeulen, Frederic
中科院分区：
文献类型：
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作者：
Cherchye, Laurens;De Rock, Bram;Vermeulen, Frederic
我们记录了食物选择的个体差异是巨大的，并且对营养和健康有潜在的重要影响。我们开发了一种方法，使我们能够在经济框架内研究这种个体内部差异的决定因素，并允许跨个体偏好异质性。我们发现，大约五分之一的个体内部饮食质量波动可以用标准经济变量（价格和预算）以及广告和天气来解释。剩余波动很重要，对于收入较低、较年轻的人和自称冲动的人来说，剩余波动更大。我们提出了一个食品购买行为的双自我模型来从结构上解释这些经验模式。我们使用非参数显示偏好技术来表明该模型使我们的食品购买数据合理化。(C) 2020作者。Elsevier B.V.出版
We document that within-individual variation in food choices is substantial and has potentially important consequences for nutrition, and hence well-being. We develop an approach that allows us to study the determinants of this within-individual variation within an economic framework and allow for across-individual preference heterogeneity. We show that around one-fifth of within-individual fluctuations in diet quality is explained by standard economic variables (prices and budgets), along with advertising and weather. The residual fluctuations are important and are larger for lower income and younger people, and individuals who state they are impulsive. We propose a two-selves model of food purchase behavior to structurally interpret these empirical patterns. We use nonparametric revealed preference techniques to show that this model rationalizes our food purchase data. (C) 2020 The Authors. Published by Elsevier B.V.