So we actually had the foods on a plate or in a bowl, or in a glass, and we had--we asked them to estimate how much of the food there was, how many ounces they were seeing, and then how many calories there were.

食物被摆在盘子,碗,玻璃杯中,然后让他们估计食物总量,有多少盎司,多少卡路里

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Cereal would be--a serving of cereal would be about the amount that would fit in a wine glass, but people think that you fill up a bowl and that becomes a serving, but a typical amount of cereal that people serve themselves might be two or three times what the ordinary size is.

这是一餐份量的麦片,放在酒杯里大概那么多,但人们认为满满一碗才是一份,人们通常所食用的麦片,是原来大小的二到三倍

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选