First, moral behavior arises from an interest and concern for others. Psychologists have long considered the desire to participate in social interactions, develop relationships, and have empathy toward others as essential to psychological health. In fact, one of the most notable developmental psychologists who studied the moral development of children was Lawrence Kohlberg, who developed Piaget's theory of moral development. Kohlberg discerned that children pass through "an invariant developmental sequence consisting of three levels of moral thinking: premoral (or preconventional), conventional, and postconventional, the result of which is a sense of justice." Children are thought to move through each of the stages, but perhaps at different rates” (Wittmer, Petersen, & Puckett, 2013, p. 362). During the first stage of moral reasoning, children are interested in the rules handed down by society and worry about whether they will be punished if they break these rules. Secondly, children realize that society's rules are not the only point of view and instead want the rules to benefit.