Children's jealousy almost always manifests itself when a family gives birth to a second child. No matter how big the age difference is between kids, the older child will feel the prick of jealousy. And that's fine. This means that the child loves his parents. Much worse it would be if a two or three year old did not react to the appearance of a younger child. It is impossible to completely eliminate a child's jealousy, but minimizing it is possible.
The mother should give the older child as much attention as possible. The words that the mother loves both children equally, for a child remain but words, they mean nothing if the mother is unavailable. The emergence of the youngest child had less impact on daily routines of older. Still need to go on walks, to draw, to play together.
Sibling rivalry often takes an aggressive form. A senior can try to hit the baby or anything like that to hurt her. Parents should try not to bring up the fact that the child took out their anger on younger, warning his aggression. It is therefore important to monitor the behavior of the older child and quenching bouts of anger, still "in the Bud". If the child struck a younger, it is impossible to beat, humiliate, otherwise later it can still repeat this action.