Bringing peace to sibling rivalry
No matter how gently we tell a child not to hurt another, he cannot hear us. He can only hear that he is "not all right" with us and therefore not worthy of love. Feeling rejected, the child is then likely to lash out even more at his sibling, seeing her as the cause of losing parental love. Our disapproval reaffirms his worst fear that he has lost his place in our heart, and he has no control over his inner drive to act as he does. He many be bored, needing a sense of power through play, trying to get your attention in the best way he can or he may have a deeper anxiety associated with his sister. Whatever his inner drive, he needs you to see the validity of his need.
Mother of 3, author Naomi Aldort gives on API's blog, APtly Said, an example of mediating sibling rivalry by bringing in connection without judgment.