题　目：Choosing Larger Portion Sizes for Others

嘉　宾：Theresa Kwon, Assistant Professor, The University of Hong Kong 

主持人：史正煜 助理教授 上海交通大学安泰经济与管理学院

时　间：2026年4月15日（周三）13:30-15:00

地　点：上海交通大学 徐汇校区 安泰经济与管理学院A303

内容简介:

Consumers’ portion size choices are important, as they can influence how much food is eaten and wasted. While previous research has focused on self-selected portion sizes, this research examines portion size choices for others. The authors demonstrate that consumers choose larger portion sizes for others than for themselves, across both healthy and unhealthy foods, and for a wide range of different others. Choosing larger portion sizes for others is problematic, as the authors show that it can contribute to increased food waste. Both process-consistent moderation and mediation show that one driver of choosing larger portion sizes for others is consumers’ desire to view themselves as being caring. Alternative accounts (e.g., predicting that others want to eat more than the self, greater consumption amount uncertainty for others than the self) are addressed. Finally, a process-consistent intervention that reframes the meaning of being caring as mitigating the burden of unwanted leftovers for others decreases portion size choices for others. Altogether, this research offers theoretical contributions to the literatures on food decision-making and choices for others and offers practical contributions by identifying a novel contributor to food waste in social contexts and thus a potential target for interventions aimed at mitigating food waste.

演讲人简介：

Theresa (Tess) Kwon is an Assistant Professor of Marketing at the University of Hong Kong Business School. She received her Ph.D. in Marketing from the University of Pittsburgh in 2024 and previously earned a Ph.D. in Retail, Hospitality, and Tourism Management from the University of Tennessee in 2019. She holds an M.S. and a B.S. in Clothing and Textiles from Seoul National University.

Professor Kwon’s research focuses on consumer behavior, with particular expertise in shared consumption, solo and joint decision-making, and choices made for oneself versus for others. Her work examines how these consumption decisions and experiences shape consumers’ social relationships and overall material well-being. Bridging insights from marketing and consumer psychology, her research advances understanding of how interpersonal dynamics influence marketplace behavior.

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