Progressive interaction between a person and the environment through stages beginning in infancy, as described by erik erikson (1902–1994). A person at phase-specific developmental points faces specific developmental tasks involving social relations and the role of social reality. The early stages parallel those of psychosexual development; the later stages extend through adulthood. Successful and unsuccessful outcomes at each stage are listed below with the corresponding chronological period and psychosexual stage where applicable.
The development of the person in his or her relationships to other people.