Loud, Proud, and .... What Could You Speak Up!!

Our class is in the middle of a project to create an Native American village depicting the life of certain Michigan tribes. As the assignment went out, the groups assigned, and the planning phase about to begin, students began vying for position within the herd. I wish business people could spend a day in a classroom and watch in awe as students have to be taught how to handle themselves in a cooperative group manner. I think as adults we take for granted the sanity at which we coexist among our peers. We forget the days of school and being a kid in a class where boundaries are constantly being tested and tried. Where the common social rules don't necessarily apply 100% of the time. After all, it's a learning environment.

While the kids use the 'If I yell louder then the next person, I will win' technique, I'm brought back to my own home and the interactions we have among five people. The youngest child just so happens to be the loudest. Why? I've come to the conclusion it's because he wants to be heard. He wants to give his opinion, and just like all of us, whatever he's about to say needs to be heard by everyone (including the neighbors). If he's not in 'yell' mode then he will be easily and quickly dismissed. Hmmmmm, just like the kids in class. It's talk loudly first, listen second.
So am I witnessing learned behavior or survival behavior? If the survival behavior is not modified at home than doesn't it then become learned behavior?

What's your thoughts?
Is your home different?