A prerequisite to empathy is simply paying attention to the person in pain.
Attention is a little-noticed and underrated mental asset.
There is perhaps no psychological skill more fundamental than resisting impulse.
Reducing the economic gap may be impossible without also addressing the gap in empathy.
The basic premise that children must learn about emotions is that all feelings are okay to have; however, only some reactions are okay.
But the rational mind usually doesn't decide what emotions we "should" have !