The document discusses theories of child development and how they relate to children's literature. It provides overviews of Piaget's cognitive development stages, Erikson's psychosocial development stages, and Kohlberg's moral development stages. It then analyzes Roald Dahl's story "James and the Giant Peach" using these developmental theories, noting how the main character and story elements appeal to children at different stages. The document also discusses using child development theories to inform writing and selecting children's literature.