Vocal Pitch & Physical Dominance

This describes how men adjust their vocal pitch, lower it when they perceive themselves as superior to another male they are speaking to.

I remember being little, hearing my father address strangers in this bizarre lowered voice that was out of line with his general speaking. I never knew it was a pissing contest, calculated or not.

On a similar primal note, this describes why gentlemen prefer blondes: “blonde hair is a marker of youth as it normally turns to brown as a woman ages.”