They may throw tantrums when they feel tired or hungry, so parents should make sure they are rested and well fed. They shouldn't be overstimulated or taken out if they are tired. Older kids create scenes if they are frustrated and feel they can't communicate. Parents need to take time to listen to their kids each day. Reasoning with a child in the midst of a tantrum is usually unsuccessful, since children are too out of control to listen.
Some parents give their children what they want just to stop the tantrum.
This may put a halt to the screaming, but it also teaches kids to throw tantrums whenever they want something. Many parents share horror stories about being stuck at the supermarket or the mall with a screaming child. Parents need to maintain their authority and composure. If it's not possible to leave, the child should be given a consequence such as a time out at home. If the child is screaming in the checkout line, the parent should stay calm.