Psychology
The Development of Moral Reasoning in Children and Adolescents
Quick fact
Lawrence Kohlberg studied the same group of boys for over 20 years, finding that only about 15% of adults ever reach the highest stage of moral reasoning (postconventional).
Why this is interesting
Why would a 7-year-old say it's okay to steal medicine to save a life, while a 14-year-old might argue it's still wrong because it breaks the law? The answer lies in how moral reasoning develops with age.
Read the full explanation
Understanding The Development of Moral Reasoning in Children and Adolescents
Moral reasoning is the process by which people decide what is right or wrong. In children and adolescents, this reasoning follows a predictable pattern. Young children (ages 4-10) typically use 'preconventional' reasoning: they judge actions based on direct consequences (punishment or reward). For example, a child might say, 'Stealing is wrong because you'll get spanked.' Around ages 10-14, adolescents often shift to 'conventional' reasoning: they focus on following societal rules and maintaining social order. A teen might argue, 'Stealing is wrong because it breaks the law and disrupts society.' In late adolescence and adulthood, some develop 'postconventional' reasoning, where moral judgments are based on abstract principles like justice and human rights, even if they conflict with laws. This progression is not automatic—it depends on cognitive development and exposure to differing perspectives.
A deeper explanation
The mechanism behind moral development is rooted in cognitive maturation and social experience. Lawrence Kohlberg, inspired by Piaget's theory of cognitive stages, proposed three levels—each with two stages—that represent increasingly complex ways of thinking about morality. The shift from preconventional to conventional reasoning reflects a growing ability to take others' perspectives (role-taking) and understand social systems. The move to postconventional reasoning requires abstract thought and the ability to balance conflicting ethical principles. Kohlberg's classic 'Heinz dilemma' (whether a man should steal an expensive drug to save his dying wife) reveals these stages: preconventional children focus on punishment or gain, conventional adolescents on law and order, and postconventional individuals on inalienable rights. Critics note that Kohlberg's theory may underestimate cultural variations and the role of emotion (e.g., empathy) in moral decisions. Nonetheless, the developmental framework remains influential, showing that moral growth involves not just learning rules but restructuring how we think about fairness and justice. It matters because it helps educators and parents foster moral reasoning by presenting dilemmas that challenge current thinking and encourage reflection.