For rich people,
reading others emotions may be one.
One experiment used volunteers who worked at a university. Some had graduated from college and others had not; researchers used educational level as a proxy for social class. The volunteers did a test of emotion perception, in which they were instructed to look at pictures of faces and indicate which emotions each face was displaying. People with more education performed worse on the task than people with less education. In another study, university students who were of higher social standing (determined from each student's self-reported perceptions of his or her family's socioeconomic status) had a more difficult time accurately reading the emotions of a stranger during a group job interview.