Erikson's Psychosocial Stages

Erikson mapped personality development onto the whole lifespan, not just childhood. Each of his eight stages is tied to a rough age range and centers on one conflict between a healthy outcome and an unhealthy one: trust vs. mistrust (infancy), autonomy vs. shame and doubt (toddlerhood), initiative vs. guilt (early childhood), industry vs. inferiority (school age), identity vs. role confusion (adolescence), intimacy vs. isolation (young adulthood), generativity vs. stagnation (middle adulthood), and integrity vs. despair (old age).

The conflict shows up because each stage puts a person in a new social situation demanding something from them. An infant depends completely on caregivers, so the question is whether the world feels reliable. A teenager is pressed to figure out who they are outside their family, so the question is whether they build a stable identity or stay confused about their role. How a person resolves the conflict doesn't vanish once the stage ends; it becomes part of the psychological material the next stage works with, which is why an unreliable infancy can echo in adult relationships decades later.

None of this is a life sentence. Erikson described typical timing and typical themes, not a single pass-fail test. A rocky adolescence around identity can still resolve into a clear sense of self in the twenties or beyond, through new relationships and experiences that reopen the same question. This flexibility connects psychosocial stages to the learning unit nearby: just as conditioning can reshape behavior through new experience at any age, Erikson's stages can be revisited and renegotiated well past their original window.