Erik Erikson came up with each stage of life that has its own psychological development task which is a crisis that needs resolution. There are eight stages of psychological development beginning at infancy (to one year) through late adulthood (late 60s and up). He states that infants develop trust when their needs are met, toddlers learn to be independent, preschoolers learn to do tasks, elementary school children learn the pleasure of applying themselves to tasks, adolescence teens learn to test their roles and find identity, young adults struggle to find a relationships or feel isolated, middle adults discover sense into contributing to the world or may feel lack of purpose, and in late adulthood, they reflect on their lives and may be satisfied
