我曾经参加过一个伏特加品酒大赛，赛上要求参与者辨别出顶级伏特加与普通品牌。
I once took part in a vodka tasting contest, in which participants tried to tell an expensive brand from a cheap one.
为了做这项研究，他们测试了几种方案，观察人们对着名牌、着普通品牌和着无牌服饰的人的反应。
To do so, they tested several scenarios of someone wearing a luxury brand logo, a logo from a non-luxury brand, or no logo.
总共使用了三个版本的照片，除了T恤衫上的品牌商标（奢侈品、普通品牌、无牌）不同之外，其他均相同。
Three versions of the picture were used, identical except for the shirt's visible brand logo (luxury, non-luxury, or none).
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