Stop the Criticism between Siblings Do not allow one sibling to put down or constantly criticize the other. It can have a detrimental effect on both for life. A child who is taught always to ignore and walk away from someone verbally abusing him will likely harbor deep feelings of hostility and resentment, if he never speaks up. Children should be taught to assert their feelings verbally without accusation. If one sibling is in the destructive habit of criticizing another, or making him look bad, teach the child who is being put down to seriously express his feelings.
Factual statements can be effective.
You've got a problem. Even if the critical sibling will not stop, the simple act of clearly expressing his feelings and exposing the bully will enable the hurt child to discharge his resentment. Fairness You can try to be fair but realistically this is not always possible. I had an important realization over breakfast. They looked at me like I was crazy, and basically told me so.