This doesn’t seem surprising, given the reverse has long been known - in any supposed meritocracy, height, a deep voice, facial hair all tend to correlate with

This doesn’t seem surprising, given the reverse has long been known - in any supposed meritocracy, height, a deep voice, facial hair all tend to correlate with (or cause?) authority. I’ve experienced that personally - I look older than I am, so people look to me for advice even before they establish my credentials or competency.