Kolberg's theory of moral developments consists of three levels. The conventional level, also called Role Conformity, is the second level. This level is divided into two stages: The "good interpersonal relationships" and "maintaining the social order".
Diane's enjoyment of this "good girl" praise reflects the Good Interpersonal Relationships stage. In this stage, the individual (mostly adolescents) begins to internalize the moral standards of authority but not question it, and acts according to those moral standards in order to be approved by others and be seen as being a good person by others.