The Ben Franklin effect is a proposed psychological phenomenon: A person who has performed a favor for someone is more likely to do another favor for that person than they would be if they had received a favor from that person. An explanation for this would be that we internalize the reason that we helped them was because we liked them. The opposite case is also believed to be true, namely that we come to hate a person whom we did wrong to. We de-humanize them to justify the bad things we did to them.