For infants and preschool children, because they spend more time with their parents and are in the primary stage of socialization, their parents are the most important, and their words and deeds will directly affect their future personality, behavior and attitude.

For school-age children and adolescents in junior and senior high schools, long school hours are greatly influenced by teachers. A good teacher will affect a person's life.

In high school teenagers, the role of peers is very critical, and what kind of friends they associate with will even affect their social development.