An unreinforced response is when the bell goes on but there's no food.

非强化反应是有铃声但却没食物的时候。

耶鲁公开课 - 心理学导论课程节选

If a food never had trans fat in it but it gets labeled as having no trans fat, does that increase your perception of how good that food is for you?

如果某种食品不含反式脂肪酸,而上面也贴着不含反式脂肪酸的标签,它是否会提高你对这个食品的认知呢

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选