section_path: Reason in particular fields of study/Psychology and cognitive science/Developmental studies of children's reasoning
section_name: Developmental studies of children's reasoning
paragraph_text: Developmental studies of children's reasoning
  
  Developmental psychologists investigate the development of reasoning from birth to adulthood. Piaget's theory of cognitive development was the first complete theory of reasoning development. Subsequently, several alternative theories were proposed, including the neo-Piagetian theories of cognitive development.