我们遇到面熟的人就会有亲切感，与外表、人品无关，人们容易对经常见到的人或离自己近的人抱有好感。对这些面熟的人，即使没有说过话，也会有一种亲切感，就像对朋友伙伴的感情一样。看到他们的身影，我们会缓解慌乱的情绪。这就是“曝光效应”（mere exposure effect）。

The mere-exposure effect is a psychological phenomenon by which people tend to develop a preference for things merely because they are familiar with them.

曝光效应这种心理现象指的是人们容易对熟悉的人或事物产生好感。

In social psychology, this effect is sometimes called the familiarity principle.

社会心理学又把曝光效应叫做熟悉定律（familiarity principle）。

The effect has been demonstrated with many kinds of things, including words, Chinese characters, paintings, pictures of faces, geometric figures, and sounds. In studies of interpersonal attraction, the more often a person is seen by someone, the more pleasing and likeable that person appears to be.

这种现象已被诸多实验验证，包括英语单词、汉字、绘画、脸部照片、几何图形、以及声音。在人际吸引力研究中，人们见到某个人的次数越多，就对他/她越有好感。