In 2012, the New York City Board of Health prohibited restaurants from selling sugary drinks in containers that would hold more than 16 oz. Although a state court ruled that the Board of Health did not have the authority to implement such a policy, it remains a legally viable option for governments and a voluntary option for restaurants. However, there is very limited empirical data on how such a policy might affect the purchasing and consumption of sugary drinks. We report four well-powered, incentive-compatible experiments in which we evaluated two possible ways that restaurants might comply with such a policy: bundling (i.e., dividing the contents of oversized cups into two regulation-size cups) and providing free refills (i.e., offering a regulation-size cup with unlimited refills). Bundling caused people to buy less soda. Free refills increased consumption, especially when a waiter served the refills. This perverse effect was reduced in self-service contexts that required walking just a few steps to get a refill.

中文翻译：

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含糖饮料摄入量限制的心理学实施


2012 年，纽约市卫生局禁止餐馆销售容量超过 16 盎司的容器中的含糖饮料。尽管州法院裁定卫生部无权实施此类政策，但它仍然是政府的合法可行选择和餐馆的自愿选择。然而，关于此类政策如何影响含糖饮料的购买和消费的实证数据非常有限。我们报告了四项强有力的、激励相容的实验，其中我们评估了餐馆遵守此类政策的两种可能方式：捆绑（即，将超大杯子的内容物分成两个规定尺寸的杯子）和提供免费续杯（即， ，提供标准尺寸的杯子，可无限续杯）。捆绑销售导致人们购买的苏打水减少。免费续杯增加了消费，尤其是当服务员提供续杯时。在自助服务环境中，这种反常效应会减少，因为自助服务环境只需步行几步即可补充。