- Erik Erikson developed eight stages of psychosocial development from infancy to late adulthood, with each stage building on the last and contributing to one's evolving sense of self. - In the early stages, successful completion leads to feelings like trust, autonomy, initiative, and identity, while failure can result in outcomes such as mistrust, shame, guilt and role confusion. - As people progress through the stages, their relationships with parents, peers and partners play an important role in developing self-awareness and a healthy self-esteem and worldview.

1. Personality and the Self