Professor Shelley Hymel:

From early on. For example, the roots of empathy programme starts out very early. It can start out in kindergarten. The point is that no one programme gives someone all the skills. There has to be a lot of diversity. For example, there could be an empathy-based programme in one grade level and a conflict resolution programme in another. One has to keep varying skills that are focused on because it is not one thin; it is multiple things.