Piaget differed from psychoanalytic and psychosocial theorists by focusing on children's:

1. Each stage theorist chose a different aspect of the child to track. 2. Instead of approaching development from a psychoanalytical or psychosocial perspective, Piaget focused on children's cognitive growth. 3. His four stages describe how thinking itself changes. 4. Erikson's psychosocial stages instead track relationships and identity. _Source: OpenStax Psychology 2e (CC BY 4.0), Ch 9 'Lifespan Development', sections 9.1-9.4_