People In Higher Social Class Have An Exaggerated Belief That They Are More Capable Than Others

APA:

People who see themselves as being in a higher social class may tend to have an exaggerated belief that they are more adept than their equally capable lower-class counterparts, and that overconfidence can often be misinterpreted by others as greater competence in important situations, such as job interviews, according to research published by the American Psychological Association.
“Advantages beget advantages. Those who are born in upper-class echelons are likely to remain in the upper class, and high-earning entrepreneurs disproportionately originate from highly educated, well-to-do families,” said Peter Belmi, PhD, of the University of Virginia and lead author of the study. “Our research suggests that social class shapes the attitudes that people hold about their abilities and that, in turn, has important implications for how class hierarchies perpetuate from one generation to the next.”