Abstract Two experiments in France investigate how larger portions influence consumption of healthy foods. Our studies compare the portion-size effect across snack foods varying in healthiness (potato chips and apple chips) and in a healthy snack (carrots) in a field setting (a movie theatre). Study 1 showed that doubling the portions increased consumption of both healthy and unhealthy snacks. Study 2, conducted in a movie theatre, showed that high-school students ate more of a healthy snack (baby-carrots) when given a larger portion. It also investigated if the portion-size effect was moderated by the type of movie being watched. Portion-size effect was mitigated when participants watched a food-related (vs. food-unrelated) movie, suggesting that food-focus reduces the effect of the portion size cue. Increasing portion sizes of healthy snacks may be a promising way to promote healthier food consumption. Being exposed to a food-related movie, however, mitigates the effect of portion size on consumption.

中文翻译：

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吃更多更健康的零食会有帮助吗？

摘要 法国的两项实验调查了较大份量如何影响健康食品的消费。我们的研究比较了不同健康度（薯片和苹果片）和健康零食（胡萝卜）在野外环境（电影院）中的份量效应。研究 1 表明，将份量加倍会增加健康和不健康零食的消费量。在电影院进行的研究 2 表明，高中生吃的健康零食（小胡萝卜）吃得更多。它还调查了份量效应是否受到正在观看的电影类型的影响。当参与者观看与食物相关（与与食物无关）的电影时，份量效应会减轻，这表明以食物为中心会减少份量提示的影响。增加健康零食的份量可能是促进健康食品消费的一种有前途的方式。然而，接触与食物有关的电影会减轻份量对消费的影响。