Mr. Argumentor
I fab shitboxes and shitbox accessories.
I would need to talk to Ladybutt as I think there is a flaw in your question. I don't think there is any reinforcement you can give that will stop the tantrum.I understand your example. What I was trying to understand from your viewpoint, is if said child was throwing a tantrum, what reinforcement could you use to stop the tantrum. You mentioned reinforcement was better than punishment. In my mind, punishment was by far more effective at stopping the tantrum. Notice punishment doesn't always mean spanking.
However, if you don't know why the child is tantruming there isnt a lot you can do, so let's just go with the child wants something. The proper response, according to operant conditioning is to not get them what they want, ignore the tantrum, and the child until they act in a manner that you want.
Punishment necessitates that you act immediately and consistently every single time you go to modify behavior.