University of California San Diego, La Jolla, California, United States of America.
PLoS One. 2013 Apr 10;8(4):e61081. doi: 10.1371/journal.pone.0061081. Print 2013.
We examined whether a sugary drink limit would still be effective if larger-sized drinks were converted into bundles of smaller-sized drinks.
In a behavioral simulation, participants were offered varying food and drink menus. One menu offered 16 oz, 24 oz, or 32 oz drinks for sale. A second menu offered 16 oz drinks, a bundle of two 12 oz drinks, or a bundle of two 16 oz drinks. A third menu offered only 16 oz drinks for sale. The method involved repeated elicitation of choices, and the instructions did not mention a limit on drink size.
Participants bought significantly more ounces of soda with bundles than with varying-sized drinks. Total business revenue was also higher when bundles rather than only small-sized drinks were sold.
Our research suggests that businesses have a strong incentive to offer bundles of soda when drink size is limited. Restricting larger-sized drinks may have the unintended consequence of increasing soda consumption rather than decreasing it.
如果将大包装饮料转换为小包装饮料束，含糖饮料限量是否仍然有效。
在行为模拟中，参与者提供了不同的食物和饮料菜单。一个菜单提供 16 盎司、24 盎司或 32 盎司的饮料销售。第二个菜单提供 16 盎司的饮料、两罐 12 盎司的饮料束或两罐 16 盎司的饮料束。第三个菜单只提供 16 盎司的饮料销售。该方法涉及反复选择，并且说明中未提及饮料尺寸的限制。
与不同大小的饮料相比，参与者购买的苏打水捆绑包的盎司数明显更多。当出售捆绑包而不是仅小包装饮料时，总业务收入也更高。
我们的研究表明，当限制饮料尺寸时，企业有强烈的动机提供苏打水捆绑包。限制大尺寸饮料可能会产生意想不到的后果，即增加苏打水的消费，而不是减少其消费。
