What's on the screen are computer generated faces of a Caucasian male and a Caucasian female who don't exist in the real world.

屏幕上面的这些是电脑生成的,一个高加索男性和一个高加索女性的面孔,他们在现实世界中并不存在

耶鲁公开课 - 心理学导论课程节选

There are some preferences with humans and with other primates to favor faces.

人类和其他灵长类动物,都对所喜爱的面孔具有一定的偏好

耶鲁公开课 - 心理学导论课程节选