Kohlberg's Conventional Level of Moral Development

In the realm of developmental psychology, moral development is a key area of study. One influential theorist, Lawrence Kohlberg, proposed a stage theory of moral development that outlines how individuals progress through different levels of moral reasoning as they grow. Kohlberg's theory consists of three primary levels: preconventional, conventional, and postconventional. Each level contains two stages that reflect the complexity of moral thought.

If we consider the primary focus of Kohlberg's theory, what is one fundamental premise regarding how individuals determine what is right and wrong at the conventional level of moral development?