Haven't we really always known this?
Maybe we're simply "too smart" for our own good and that of our kids.
Several years ago, I coached a co-ed baseball team of 4th and 5th graders in the Texas Rangers' Rookie League. We played about 20 games during June each year. These kids had never played baseball.
As we started the season, they hardly knew each other. By the time we finished each of two seasons, the players had become fast friends, took up for each other and all seemed in better condition.
If I had my way, I'd still be coaching in that league. We had to stop because early season workouts conflicted with TAKS test preparation at the players' school. Another win for standardized testing and a huge loss to the children, their health and, I would argue, their academic capacity.
What do you say?