the theorist noted for his theories on moral development is
Moral development Notions of morality development have been developed over centuries, the earliest came from philosopher like Confucius, Aristotle, and Jean-Jacques Rousseau, who all took a more humanist perspective and focused on the development of the conscience and sense of virtue. In the modern day, empirical research has explored morality through a moral psychology lens by theorists like Sigmund Freud and its relation to cognitive development by theorists like Jean Piaget, Lawrence Kohlberg, B. F. Skinner, Carol Gilligan and Judith Smetana.
John Locke John Locke FRS (/lɒk/; 29 August 1632 – 28 October 1704) was an English philosopher and physician, widely regarded as one of the most influential of Enlightenment thinkers and commonly known as the "Father of Liberalism".[1][2][3] Considered one of the first of the British empiricists, following the tradition of Sir Francis Bacon, he is equally important to social contract theory. His work greatly affected the development of epistemology and political philosophy. His writings influenced Voltaire and Jean-Jacques Rousseau, many Scottish Enlightenment thinkers, as well as the American revolutionaries. His contributions to classical republicanism and liberal theory are reflected in the United States Declaration of Independence.[4]