This document outlines Erik Erikson's psycho-social stages of development from infancy to late adulthood. It describes 5 key stages: 1) Industry vs. Inferiority focuses on developing a sense of pride in accomplishments during childhood ages 6-12. 2) Identity vs. Identity Diffusion addresses establishing a sense of self during adolescence ages 18-20. 3) Intimacy vs. Isolation centers on forming intimate relationships during early adulthood ages 18-30. 4) Generativity vs. Stagnation emphasizes caring for others during middle adulthood ages 40-65. 5) Ego Integrity vs. Despair deals with accepting one's life in late adulthood ages 65 and up.