The question here is about the degree of influence on the details of our behavior,
That clears it up substantially, but it does not sound like what you asked originally. It’s clear that hours of sleep could be used to signal status. It’s not at clear (and it seems unlikely) that hours of sleep are influenced by a desire to signal status. “The degree of influence on the details of our behaviour” is a fine criteria; it just doesn’t seem like what you asked for in the original post.
That clears it up substantially, but it does not sound like what you asked originally. It’s clear that hours of sleep could be used to signal status. It’s not at clear (and it seems unlikely) that hours of sleep are influenced by a desire to signal status. “The degree of influence on the details of our behaviour” is a fine criteria; it just doesn’t seem like what you asked for in the original post.