My kid & neighbour kid require an average of 18 minutes before injustice is created out of pure happiness.
Hence parental control should not kick in until;
either
-after 25 minutes
-premonition 12 minutes.
This means parents have an average of 18 minutes to chill, then re-direct concentration of the little ones.
http://img2.pict.com/7f/1d/08/275833...z/kidfight.jpg