ABSTRACT
This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book explains that the Piagetian notions of stage and structure are featured in most theories of moral reasoning. It examines in broad stroke the Piagetian approach to intellectual development with a particular focus on the twin notions of stage and structure. The chapter also examines Piaget's landmark study of moral judgment. The interaction of parts and wholes can be observed at all levels of reality. In biology, it is reflected in the interaction between cells and the organism. It was noted previously that according to Piaget's relational holism, the relationship between parts and whole is primary. Indeed, part-whole totalities were said to be derivative of transformative operations such that structures could not be understood apart from the constructive activities that generated them.
