Jean Piaget worked in cognitive domain introducing Theory of Cognitive Development. Developmental Theory was initially introduced by Sigmund Freud and further developed by , Erik Erikson's Theory of Psychosocial Development. In 1950s humanist theorists with the most renown Abraham Maslow introduced humanist theories emphasizing positive features of human nature.
This paper covers theories pertaining to personality development and explaining the roots of human behavior. Starting from the earliest theories of human behavior, development and personality it involves to the recent theories focused on the human intellect.
S. Freud personality development theory involves two variables, the interaction of which makes up a personality. These are biological determinants and environment, in which parental behavior plays an important role particularly during infancy.
According to Freud personality is composed of the id, ego, and superego. In this theory Freud managed to integrate biological and environmental variables - the id introduces instinctual drives while ego helps to keep balance between urges of the id and rules of society, represented by the superego. ...