Daisy, the article is interesting. I actually agree that boys in particular seem to have a need to rough-house and it is nearly impossible to stop them from doing it at a point. What I struggle with though, in my daycare, is allowing them to do it without hurting the little kids who find themselves in the the middle of it. My 5 year old son loves rough play and would love the younger kids to join him, but they are too little. When he has a boy closer to his age, they have a great old time, but it gets a bit loud and chaotic and I am worried that one of the little ones might get hurt. I know the boys would be happy to rough-house all day, but I can't send the other kids home with bruises.