1.   The regression to really childish behavior that boys often undergo when put in large groups.

2.   A third reason not to make kindergarten so academic is that it turns normal childish behavior into an illness.

3.   Childish behavior Pittsburgh pitcher Jason Schmidt and outfielder Turner Ward could find themselves in serious trouble if major league baseball security director Kevin Hallinan is true to his word.

4.   Our respondents seem less worried by childish behavior than by their own angry reactions to it.

5.   He has been criticized repeatedly for what fans perceived as childish behavior when Tremblay lifted him from the game.

6.   There were enough examples of that childish behavior that you see a lot of stars like to get away with.