Theories of child development have been researched and published over the years. These researches were conducted by popular theorists, four of whom are Piaget (1896 –1980), Vygotsky (1896 –1934), Ausubel (1918 –2008), and Kohlberg (1927 –1987). First let me define the term theory. A theory is a collection of related statements; whose main function is to summarize and explain observations. It is in some sense an invention designed to make sense of what we know or suspect. Developmental theory, on the other hand, is a systematic statement of principles and generalizations that provides a coherent framework for understanding how and why people change as they age. The writer in her essay will outline two developmental theories Lawrence Kohlberg and Jean Piaget who talked about moral and cognitive development respectively. Lawrence Kohlberg as the first theorist to be outlined is an American psychologist who wrote in his research what are now known as developmental stages of moral development. Moral development as defined by is the process through which children develop appropriate attitudes and behaviors towards other people in society, based on social and cultural norms, rules and laws. These stages are plans of moral adequacy designed to explain the development of moral reasoning. This was created while studying psychology at the University of Chicago, as a result of being inspired by the work of Jean Piaget. Kohlberg's theory includes three levels (Pre-conventional, Conventional and Post-Conventional) and six phases Obedience and Punishment, here the child focuses on the pursuit of concrete interests, avoiding sanctions. Individualism and instrumental purpose, here what is right is right. Do your…half of paper…visual skills. Thus, Piaget's stage may only suit some children. By knowing these phases I will know the skills and abilities of the children therefore suitable lessons will be prepared for them; children who are very advanced and who are well beyond their cognitive stage will be welcomed as such. The emergent teacher will allow the child to learn within his or her scope while socializing with his or her peers. In conclusion, developmental theories have greatly influenced the way facilitators, teachers, faculty, and many others think about individual development. As an emerging teacher, I believe it is very important for teachers like me to know and understand the views of different developmental theories and use them as a guide in planning appropriate lessons and actively involving children in the teaching and learning process. .com