If you are sure that it is a "fit" or tantrum, then yet, I always found it best to ignore negative behavior and reward good behavior.(The reward here being my attention.) From VERY early on, my son understood that tantrums were just not tolerated. I never hit him, or punished him too severely when he did something wrong, but one difference may have been that we just taught him from the begining AHEAD OF TIME what behavior was expected of him. We trained him in the way we wanted him to be and didn't only start when bad behavior started and would have then meant retraining him fromthe bad behavior. So, ,that's my 2cents worth!