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）。