I think it depends on the kid. You just have to rely on the parents judgement. When our oldest was 4 our twins were 1 and she was very abusive towards them. She was trying to make them hurt and upset.
At 5, now they mostly get along fine. Unless they get in her toys. Then it's bodyslam time.
Thank you for saying this, because I’m the parent of a toddler and an infant right now and I swear my only job is trying to keep the older one from hurting the younger one.
At 5, now they mostly get along fine. Unless they get in her toys. Then it's bodyslam time.