I work with infants and toddlers. I encourage them to look at the other child's face to see how they are feeling. We help the infants give the friend they hurt a nice touch. When they start to have words we encourage them to ask, "Are you OK?" In our preschool program if the hurt child says they are not ok the other child is encouraged to ask if there's something they can do to help them feel better and then follow through with the hurt child's request if possible until the hurt child feels like they are ok.