Erik Homburger Erikson (June 15, 1902 – May 12, 1994) was a developmental psychologist and psychoanalyst known for his theory on social development of human beings, and for coining the phrase identity crisis.
Erikson elaborated Freud's genital stage into adolescence, and added three stages of adulthood.
Although Erikson always insisted that he was a Freudian, subsequent authors have described him as an "ego psychologist," insofar as, in contrast to the stress laid in orthodox Freudianism on the id, Erikson emphasised the ego.