One of the main tasks when being a child is to figure out how the complex world around you works. This world includes different relationships – with parents, in particular. At each developmental level, children learn what is acceptable in relationships with other people, and what is not – they are trying to see where the boundaries are (if any). This makes a child constantly break the silence, so to say: shout, fight, be rude, or misbehave in any other way – each case is particular. This may be frustrating for parents, who might start thinking that their child has gone crazy or is possessed by evil spirits all of the sudden, but in fact it is normal and necessary for a child. During such periods, all parents can do is set the boundaries and limits and consistently follow them - See more at: https://academichelp.net/samples/academics/essays/cause-effect/misbehave.html#sthash.3Jj5yndV.dpuf