Kohlberg, inspired by Piaget's cognitive developmental approach to moral development, expands the structural cognitive approach through more systematic longitudinal, cross-cultural, social class, and educational research. (Author)

Constructs a model applying evolutionary biology theory to the development of children's sense of justice. Maintains that competition for scarce resources causes many of the moral problems involving justice. Examines the place of emotions in the sense of justice. Hypothesizes rules of justice that predate cultural history. (CH)