A child gives her friend a piece of cake, in hopes that when she forgets her snack one day, her friend will reciprocate the favor. this represents kohlberg's conventional level of morality.
According to Lawrence kohlberg, there are six stages of moral development that are grouped into three levels of morality pre-conventional, conventional or post-conventonal morality. In the conventional level there is the interpersonal accord and conformity stage that is the way this particular child behaved.