https://www.sciencedaily.com/releases/2019/10/191021151540.htm

The study, to be published in the Proceedings of the National Academy of Sciences, demonstrates that people can accurately assess a stranger's socioeconomic position -- defined by their income, education, and occupation status -- based on brief speech patterns and shows that these snap perceptions influence hiring managers in ways that favor job applicants from higher social classes.

"Our study shows that even during the briefest interactions, a person's speech patterns shape the way people perceive them, including assessing their competence and fitness for a job," said Michael Kraus, assistant professor of organizational behavior at the Yale School of Management. "While most hiring managers would deny that a job candidate's social class matters, in reality, the socioeconomic position of an applicant or their parents is being assessed within the first seconds they speak -- a circumstance that limits economic mobility and perpetuates inequality."