The Wall Street Journal:
Accents often signal social status, but it turns out that your voice indicates status pretty well all by itself.
To investigate the role of voice in hierarchy, the scientists designed two experiments. In the first, they recorded 161 college students reading a brief text routinely used to assess speaking skills.
Then the students were randomly assigned to a high or low rank in a negotiation exercise in which each was told something in keeping with this status. In the high-rank condition, for instance, some were told “you have valuable inside information,” while in the low-rank group some were asked to think of a past situation in which they lacked power.
Read the whole stoyry: The Wall Street Journal