At all stages of moral development, the individual has some sort of concern for the welfare of others. But only by stage 5 is this concern based on what Kohlberg regarded as principles of true justice, those of equality and reciprocity. The principle of equality means that we “ treat every man’s claim equally,regardless of the man” . the principle of reciprocity means equality of exchange. It means “ punishment for something bad, reward for something good, and contractual exchange” or fulfilling one’s bargain.