theories proposing that developmental change happens because of the influence of internal drives and emotions on behavior
Id
in Freud's theory, the part of the personality that comprises a persons basic sexual and aggressive impulses; it contains the libido and motivates a person to seek pleasure and avoid pain
Ego
according to Freud, the thinking element of personality
Superego
Freuds term fro the part of personality that is the moral judge
Psychosexual stages
Freuds five stages of personality develpment throu which children move in a fixed sequence determined by maturation; the libido is centered in a different body part in each stage
Psychosocial stages
Eriksons eight stages, or crises, of personality development in which inner instincts interact with outer cultural and social demands to shape personality.
Behaviorism
the view that defines development in terms of behavior changes caused by environmental influences.