3 consistent requirements to achieve the status of manhood in various societies around the world

Research to follow-up on at some point.  From Understanding the Young Male Syndrome by Rob Henderson.  

Of course, there are many ways of understanding what being man is about, and there are many valid ways to be a man. However, regardless of how it is expressed, it usually has something to do with strength and toughness and productivity.

In his cross-cultural research, the psychologist Martin J. Seager has found 3 consistent requirements to achieve the status of manhood in various societies around the world.

First, the individual must be a fighter and a winner.

Second, he must be a provider and protector.

And third, he must maintain mastery and control of himself at all times.

Across cultures, there seems to be an implicit understanding of what being a man is.