At the end of the semester he then asked people to rate different pictures as to how much they liked them, and even though people had no memory of seeing one or--versus the other they tend to like the pictures more that they had seen before.

在学期末，他叫同学,按自己喜欢程度，给这些图片评分，虽然同学都不记得哪些看过，哪些没看过,但他们喜欢的图片往往是,他们之前看过的图片。

耶鲁公开课 - 心理学导论课程节选