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.
Strain theory (sociology) Strain theory is a sociology and criminology theory developed in 1938 by Robert K. Merton.[1] The theory states that society puts pressure on individuals to achieve socially accepted goals (such as the American dream) though they lack the means, this leads to strain which may lead the individuals to commit crimes. Examples being selling drugs or becoming involved in prostitution to gain financial security.[1]